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UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM 10-Q
QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
For the quarterly period ended June 30, 2020 or
TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
Commission file number: 001-31465
nrp-20200630_g1.gif
NATURAL RESOURCE PARTNERS LP
(Exact name of registrant as specified in its charter)
Delaware 35-2164875
(State or other jurisdiction of
incorporation or organization)
 (I.R.S. Employer
Identification No.)
1201 Louisiana Street, Suite 3400
Houston, Texas 77002
(Address of principal executive offices)
(Zip Code)
(713) 751-7507
(Registrant’s telephone number, including area code) 
Securities registered pursuant to Section 12(b) of the Act:
Title of each classTrading Symbol(s)Name of each exchange on which registered
Common Units representing limited partner interestsNRPNew York Stock Exchange
Indicate by check mark whether the registrant: (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.    Yes      No  
Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).    Yes     No ☐
Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, smaller reporting company, or an emerging growth company. See definition of "accelerated filer", "large accelerated filer", "smaller reporting company," and "emerging growth company" in Rule 12b-2 of the Exchange Act.
Large Accelerated FilerAccelerated Filer 
Non-accelerated Filer
  (Do not check if a smaller reporting company)
Smaller Reporting Company 
Emerging Growth Company 
If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.  
Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes      No  
APPLICABLE ONLY TO ISSUERS INVOLVED IN BANKRUPTCY PROCEEDINGS DURING THE PRECEDING FIVE YEARS:
Indicate by check mark whether the registrant has filed all documents and reports required to be filed by Section 12, 13 or 15(d) of the Securities Exchange Act of 1934 subsequent to the distribution of securities under a plan confirmed by a court.  Yes      No  
APPLICABLE ONLY TO CORPORATE ISSUERS
Indicate the number of shares outstanding of each of the issuer’s classes of common stock, as of the latest practicable date.


Table of Contents




NATURAL RESOURCE PARTNERS, L.P.
TABLE OF CONTENTS
  Page




i

Table of Contents




PART I. FINANCIAL INFORMATION
ITEM 1. CONSOLIDATED FINANCIAL STATEMENTS

NATURAL RESOURCE PARTNERS L.P.
CONSOLIDATED BALANCE SHEETS
June 30,December 31,
(In thousands, except unit data)20202019
ASSETS(Unaudited)
Current assets
Cash and cash equivalents$110,828  $98,265  
Accounts receivable, net22,044  30,869  
Prepaid expenses and other, net4,931  1,244  
Current assets of discontinued operations  1,706  
Total current assets$137,803  $132,084  
Land24,008  24,008  
Mineral rights, net468,863  605,096  
Intangible assets, net17,608  17,687  
Equity in unconsolidated investment252,420  263,080  
Long-term contract receivable, net34,309  36,963  
Other assets, net8,554  6,989  
Total assets$943,565  $1,085,907  
LIABILITIES AND CAPITAL
Current liabilities
Accounts payable$1,228  $1,179  
Accrued liabilities6,027  8,764  
Accrued interest2,026  2,316  
Current portion of deferred revenue8,857  4,608  
Current portion of long-term debt, net45,786  45,776  
Current liabilities of discontinued operations  65  
Total current liabilities$63,924  $62,708  
Deferred revenue53,431  47,213  
Long-term debt, net452,101  470,422  
Other non-current liabilities4,901  4,949  
Total liabilities$574,357  $585,292  
Commitments and contingencies (see Note 12)
Class A Convertible Preferred Units (250,000 units issued and outstanding at June 30, 2020 and December 31, 2019, at $1,000 par value per unit; liquidation preference of $1,700 per unit at June 30, 2020 and $1,500 per unit at December 31, 2019)
$164,587  $164,587  
Partners’ capital
Common unitholders’ interest (12,261,199 units issued and outstanding at June 30, 2020 and December 31, 2019)
$139,517  $271,471  
General partner’s interest546  3,270  
Warrant holders’ interest66,816  66,816  
Accumulated other comprehensive loss(2,258) (2,594) 
Total partners’ capital$204,621  $338,963  
Non-controlling interest  (2,935) 
Total capital$204,621  $336,028  
Total liabilities and capital$943,565  $1,085,907  
The accompanying notes are an integral part of these consolidated financial statements.
1

Table of Contents
NATURAL RESOURCE PARTNERS L.P.
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS)
(Unaudited)
 For the Three Months Ended
June 30,
For the Six Months Ended June 30,
(In thousands, except per unit data)2020201920202019
Revenues and other income
Coal royalty and other$31,666  $64,616  $63,099  $114,118  
Transportation and processing services1,938  5,274  4,447  10,875  
Equity in earnings (loss) of Ciner Wyoming(3,058) 11,333  3,214  23,015  
Gain on asset sales and disposals465  246  465  502  
Total revenues and other income$31,011  $81,469  $71,225  $148,510  
Operating expenses
Operating and maintenance expenses$8,217  $12,459  $13,419  $20,819  
Depreciation, depletion and amortization2,062  3,970  4,074  8,362  
General and administrative expenses3,621  4,196  7,534  8,546  
Asset impairments132,283    132,283    
Total operating expenses$146,183  $20,625  $157,310  $37,727  
Income (loss) from operations$(115,172) $60,844  $(86,085) $110,783  
Other expenses, net
Interest expense, net$(10,329) $(12,456) $(20,637) $(26,630) 
Loss on extinguishment of debt  (29,282)   (29,282) 
Total other expenses, net$(10,329) $(41,738) $(20,637) $(55,912) 
Net income (loss) from continuing operations$(125,501) $19,106  $(106,722) $54,871  
Income from discontinued operations  245    199  
Net income (loss)$(125,501) $19,351  $(106,722) $55,070  
Less: income attributable to preferred unitholders(7,613) (7,500) (15,113) (15,000) 
Net income (loss) attributable to common unitholders and general partner$(133,114) $11,851  $(121,835) $40,070  
Net income (loss) attributable to common unitholders$(130,452) $11,614  $(119,398) $39,269  
Net income (loss) attributable to the general partner(2,662) 237  (2,437) 801  
Income (loss) from continuing operations per common unit (see Note 4)
Basic$(10.64) $0.93  $(9.74) $3.19  
Diluted(10.64) 0.85  (9.74) 2.58  
Net income (loss) per common unit (see Note 4)
Basic$(10.64) $0.95  $(9.74) $3.20  
Diluted(10.64) 0.87  (9.74) 2.59  
Net income (loss)$(125,501) $19,351  $(106,722) $55,070  
Comprehensive income (loss) from unconsolidated investment and other1,359  (825) 336  180  
Comprehensive income (loss)$(124,142) $18,526  $(106,386) $55,250  
The accompanying notes are an integral part of these consolidated financial statements.
2

Table of Contents
NATURAL RESOURCE PARTNERS L.P.
CONSOLIDATED STATEMENTS OF PARTNERS’ CAPITAL
(Unaudited)

 Common UnitholdersGeneral PartnerWarrant HoldersAccumulated
Other
Comprehensive Loss
Partners' Capital Excluding Non-Controlling InterestNon-Controlling InterestTotal Capital
 
(In thousands)UnitsAmounts
Balance at December 31, 201912,261  $271,471  $3,270  $66,816  $(2,594) $338,963  $(2,935) $336,028  
Cumulative effect of adoption of accounting standard (see Note 15)—  (3,833) (78) —  —  (3,911) —  (3,911) 
Net income (1)
—  18,403  376  —  —  18,779    18,779  
Distributions to common unitholders and general partner—  (5,517) (113) —  —  (5,630) —  (5,630) 
Distributions to preferred unitholders—  (7,350) (150) —  —  (7,500) —  (7,500) 
Unit-based awards amortization and vesting—  673  —  —  —  673  —  673  
Comprehensive loss from unconsolidated investment and other—  —  —  —  (1,023) (1,023)   (1,023) 
Balance at March 31, 202012,261  $273,847  $3,305  $66,816  $(3,617) $340,351  $(2,935) $337,416  
Net loss (2)
—  (122,991) (2,510) —  —  (125,501) —  (125,501) 
Distributions to preferred unitholders—  (7,461) (152) —  —  (7,613) —  (7,613) 
Acquisition of non-controlling interest in BRP—  (4,747) (97) —  (4,844) 2,935  (1,909) 
Unit-based awards amortization and vesting—  869  —  —  —  869  —  869  
Comprehensive income from unconsolidated investment and other—      —  1,359  1,359  —  1,359  
Balance at June 30, 202012,261  $139,517  $546  $66,816  $(2,258) $204,621  $  $204,621  
(1)Net income includes $7.5 million attributable to preferred unitholders that accumulated during the period, of which $7.35 million is allocated to the common unitholders and $0.15 million is allocated to the general partner.
(2)Net loss includes $7.6 million attributable to preferred unitholders that accumulated during the period, of which $7.46 million is allocated to the common unitholders and $0.15 million is allocated to the general partner.
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NATURAL RESOURCE PARTNERS L.P.
CONSOLIDATED STATEMENTS OF PARTNERS’ CAPITAL
(Unaudited)

 Common UnitholdersGeneral PartnerWarrant HoldersAccumulated
Other
Comprehensive
Loss
Partners' Capital Excluding Non-Controlling InterestNon-Controlling InterestTotal Capital
 
(In thousands)UnitsAmounts
Balance at December 31, 201812,249  $355,113  $5,014  $66,816  $(3,462) $423,481  $(2,935) $420,546  
Net income (1)
—  35,005  714  —  —  35,719    35,719  
Distributions to common unitholders and general partner—  (5,513) (112) —  —  (5,625) —  (5,625) 
Distributions to preferred unitholders—  (7,350) (150) —  —  (7,500) —  (7,500) 
Issuance of unit-based awards12  486  —  —  —  486  —  486  
Unit-based awards amortization and vesting—  399  —  —  —  399  —  399  
Comprehensive income from unconsolidated investment and other—    10  —  1,005  1,015    1,015  
Balance at March 31, 201912,261  $378,140  $5,476  $66,816  $(2,457) $447,975  $(2,935) $445,040  
Net income (1)
—  18,964  387  —  —  19,351    19,351  
Distributions to common unitholders and general partner—  (15,939) (326) —  —  (16,265) —  (16,265) 
Distributions to preferred unitholders—  (7,350) (150) —  —  (7,500) —  (7,500) 
Unit-based awards amortization and vesting—  460  —  —  —  460  —  460  
Comprehensive loss from unconsolidated investment and other—      —  (825) (825)   (825) 
Balance at June 30, 201912,261  $374,275  $5,387  $66,816  $(3,282) $443,196  $(2,935) $440,261  
(1)Net income includes $7.5 million attributable to preferred unitholders that accumulated during the period, of which $7.35 million is allocated to the common unitholders and $0.15 million is allocated to the general partner.
The accompanying notes are an integral part of these consolidated financial statements.
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NATURAL RESOURCE PARTNERS L.P.
CONSOLIDATED STATEMENTS OF CASH FLOWS
(Unaudited)


 For the Six Months Ended June 30,
(In thousands)20202019
Cash flows from operating activities
Net income (loss)$(106,722) $55,070  
Adjustments to reconcile net income (loss) to net cash provided by operating activities of continuing operations:
Depreciation, depletion and amortization4,074  8,362  
Distributions from unconsolidated investment14,210  19,110  
Equity earnings from unconsolidated investment(3,214) (23,015) 
Gain on asset sales and disposals(465) (502) 
Loss on extinguishment of debt  29,282  
Income from discontinued operations  (199) 
Asset impairments132,283    
Bad debt expense3,657  6,691  
Unit-based compensation expense1,653  1,376  
Amortization of debt issuance costs and other(1,086) 2,151  
Change in operating assets and liabilities:
Accounts receivable3,373  (3,107) 
Accounts payable49  (1,177) 
Accrued liabilities(3,776) (5,522) 
Accrued interest(291) (7,144) 
Deferred revenue10,467  (2,684) 
Other items, net(4,122) (2,501) 
Net cash provided by operating activities of continuing operations$50,090  $76,191  
Net cash provided by operating activities of discontinued operations1,706  355  
Net cash provided by operating activities$51,796  $76,546  
Cash flows from investing activities
Proceeds from asset sales and disposals$507  $503  
Return of long-term contract receivable1,130  892  
Acquisition of non-controlling interest in BRP(1,000)   
Net cash provided by investing activities of continuing operations$637  $1,395  
Net cash used in investing activities of discontinued operations(66) (434) 
Net cash provided by investing activities$571  $961  
Cash flows from financing activities
Debt borrowings$  $300,000  
Debt repayments(19,061) (434,470) 
Distributions to common unitholders and general partner(5,630) (21,890) 
Distributions to preferred unitholders(15,113) (15,000) 
Contributions from (to) discontinued operations1,640  (79) 
Debt issuance costs and other  (26,402) 
Net cash used in financing activities of continuing operations$(38,164) $(197,841) 
Net cash provided by (used in) financing activities of discontinued operations(1,640) 79  
Net cash used in financing activities$(39,804) $(197,762) 
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NATURAL RESOURCE PARTNERS L.P.
CONSOLIDATED STATEMENTS OF CASH FLOWS
(Unaudited)


 For the Six Months Ended June 30,
(In thousands)20202019
Net increase (decrease) in cash and cash equivalents$12,563  $(120,255) 
Cash and cash equivalents at beginning of period98,265  206,030  
Cash and cash equivalents at end of period$110,828  $85,775  
Supplemental cash flow information:
Cash paid during the period for interest$20,222  $33,045  
Plant, equipment, mineral rights and other funded with accounts payable or accrued liabilities$924  $  
The accompanying notes are an integral part of these consolidated financial statements.
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NATURAL RESOURCE PARTNERS L.P.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
(Unaudited)


1.    Basis of Presentation
Nature of Business
Natural Resource Partners L.P. (the "Partnership") engages principally in the business of owning, managing and leasing a diversified portfolio of mineral properties in the United States, including interests in coal and other natural resources and owns a non-controlling 49% interest in Ciner Wyoming LLC ("Ciner Wyoming"), a trona ore mining and soda ash production business. The Partnership is organized into two operating segments further described in Note 5. Segment Information. As used in these Notes to Consolidated Financial Statements, the terms "NRP," "we," "us" and "our" refer to Natural Resource Partners L.P. and its subsidiaries, unless otherwise stated or indicated by context.
Principles of Consolidation and Reporting
The accompanying unaudited Consolidated Financial Statements of the Partnership have been prepared in accordance with generally accepted accounting principles in the United States of America ("GAAP") for interim financial information and with Rule 10-01 of Regulation S-X. Accordingly, they do not include all of the information and footnotes required by GAAP for complete financial statements. These financial statements should be read in conjunction with the financial statements for the year ended December 31, 2019 and notes thereto included in the Partnership's Annual Report on Form 10-K, which was filed with the SEC on February 27, 2020.
Recently Adopted Accounting Standards
Credit Losses
On January 1, 2020, the Partnership adopted ASU No. 2016-13, Financial Instruments—Credit Losses (Topic 326), and all the related amendments ("the new credit loss standard"). The Partnership recognized a $3.9 million cumulative effect of adoption in the opening balance of partners' capital on January 1, 2020 as a result of the adoption of the new credit loss standard. See Note 15. Credit Losses for more information.
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NATURAL RESOURCE PARTNERS L.P.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—CONTINUED
(Unaudited)

2.    Revenues from Contracts with Customers
The following table presents the Partnership's Coal Royalty and Other segment revenues by major source:
For the Three Months Ended
June 30,
For the Six Months Ended June 30,
(In thousands)2020201920202019
Coal royalty revenues (1)
$10,847  $30,703  $29,949  $62,834  
Production lease minimum revenues (1)
8,485  15,879  9,287  18,579  
Minimum lease straight-line revenues (1)
4,987  3,854  8,796  7,170  
Property tax revenues761  1,377  2,360  2,810  
Wheelage revenues 1,584  1,945  3,788  3,360  
Coal overriding royalty revenues 683  3,999  2,005  7,974  
Lease amendment revenues890  4,414  1,733  5,185  
Aggregates royalty revenues271  1,237  847  2,701  
Oil and gas royalty revenues2,742  482  3,845  2,201  
Other revenues416  726  489  1,304  
Coal royalty and other revenues$31,666  $64,616  $63,099  $114,118  
Transportation and processing services revenues (2)
1,938  5,274  4,447  10,875  
Total coal royalty and other segment revenues $33,604  $69,890  $67,546  $124,993  
(1)Effective January 1, 2020, certain revenues previously classified as coal royalty revenues are classified as production lease minimum revenues or minimum lease straight-line revenues due to contract modifications to certain leases that fixed consideration paid to the Partnership over a two year period.
(2)Transportation and processing services revenues from contracts with customers as defined under ASC 606 was $1.3 million and $2.6 million for the three months ended June 30, 2020 and 2019, respectively and $2.5 million and $5.6 million for the six months ended June 30, 2020 and 2019, respectively. The remaining transportation and processing services revenues of $0.7 million and $2.6 million for the three months ended June 30, 2020 and 2019, respectively, and $2.0 million and $5.3 million or the six months ended June 30, 2020 and 2019, respectively, related to other NRP-owned infrastructure leased to and operated by third-party operators accounted for under other guidance. See Note 14. Financing Transaction for more information.
The following table details the Partnership's Coal Royalty and Other segment receivables and liabilities resulting from contracts with customers:
June 30,December 31,
(In thousands)20202019
Receivables
Accounts receivable, net$19,375  $27,915  
Prepaid expenses and other, net (1)
5,909  90  
Contract liabilities
Current portion of deferred revenue$8,857  $4,608  
Deferred revenue53,431  47,213  
(1)Prepaid expenses and other, net includes notes receivable from contracts with customers.
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NATURAL RESOURCE PARTNERS L.P.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—CONTINUED
(Unaudited)

The following table shows the activity related to the Partnership's Coal Royalty and Other segment deferred revenue:
For the Six Months Ended June 30,
(In thousands)20202019
Balance at beginning of period (current and non-current)$51,821  $52,553  
Increase due to minimums and lease amendment fees42,611  29,776  
Recognition of previously deferred revenue(32,144) (32,460) 
Balance at end of period (current and non-current)$62,288  $49,869  

The Partnership's non-cancelable annual minimum payments due under the lease terms of its coal and aggregates royalty and overriding royalty leases are as follows as of June 30, 2020 (in thousands):
Lease Term (1)
Weighted Average Remaining Years
Annual Minimum Payments (2)
0 - 5 years4.0$15,233  
5 - 10 years6.17,478  
10+ years13.830,802  
Total9.5$53,513  
(1)Lease term does not include renewal periods.
(2)Annual minimum payments do not include $40.0 million of annual fixed consideration owed to NRP in 2020 and 2021 resulting from contract modifications entered into during the second quarter of 2020. Additionally, $5.0 million of this $40.0 million annual fixed consideration amount relates to a coal infrastructure lease that is accounted for as a financing transaction. See Note 14. Financing Transaction for more information.

3.    Common and Preferred Unit Distributions
The Partnership makes cash distributions to common and preferred unitholders on a quarterly basis, subject to approval by the Board of Directors of GP Natural Resource Partners LLC (the "Board of Directors"). NRP recognizes both common unit and preferred unit distributions on the date the distribution is declared.
Distributions made on the common units and the general partner's general partner ("GP") interest are made on a pro-rata basis in accordance with their relative percentage interests in the Partnership. The general partner is entitled to receive 2% of such distributions.

Income (loss) available to common unitholders and the general partner is reduced by preferred unit distributions that accumulated during the period. NRP reduced net income (loss) available to common unitholders and the general partner by $7.6 million and $7.5 million during the three months ended June 30, 2020 and 2019, respectively, and $15.1 million and $15.0 million during the six months ended June 30, 2020 and 2019, respectively, as a result of accumulated preferred unit distributions earned during the period. In May 2020, the Partnership paid in kind one-half of the preferred unit distribution related to the three months ended March 31, 2020, and then redeemed all of these outstanding paid in kind preferred units on June 30, 2020.
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NATURAL RESOURCE PARTNERS L.P.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—CONTINUED
(Unaudited)

The following table shows the cash distributions declared and paid to common and preferred unitholders during the six months ended June 30, 2020 and 2019, respectively:
Common UnitsPreferred Units
Date PaidPeriod Covered by DistributionDistribution per Unit
Total Distribution (1)
(In thousands)
Distribution per Unit
Total Distribution (1)
(In thousands)
2020
February 2020October 1 - December 31, 2019$0.45  $5,630  $30.00  $7,500  
May 2020January 1 - March 31, 2020    15.00  3,750  
June 2020January 1 - March 31, 2020—  —  15.45  3,863  
2019
February 2019October 1 - December 31, 2018$0.45  $5,625  $30.00  $7,500  
May 2019 January 1 - March 31, 20190.45  5,630  30.00  7,500  
May 2019 (2)
Special Distribution0.85  10,635  —  —  
(1)Totals include the amount paid to NRP's general partner in accordance with the general partner's 2% general partner interest.
(2)The special distribution of $0.85 per common unit was made to cover the common unitholders’ tax liability resulting from the sale of NRP’s construction aggregates business in December 2018.
4.    Net Income (Loss) Per Common Unit
Basic net income (loss) per common unit is computed by dividing net income (loss), after considering income attributable to preferred unitholders and the general partner’s general partner interest, by the weighted average number of common units outstanding. Diluted net income (loss) per common unit includes the effect of NRP's preferred units, warrants, and unvested unit-based awards if the inclusion of these items is dilutive.
The dilutive effect of the preferred units is calculated using the if-converted method. Under the if-converted method, the preferred units are assumed to be converted at the beginning of the period, and the resulting common units are included in the denominator of the diluted net income (loss) per unit calculation for the period being presented. Distributions declared in the period and undeclared distributions on the preferred units that accumulated during the period are added back to the numerator for purposes of the if-converted calculation. The calculation of diluted net income (loss) per common unit for the three and six months ended June 30, 2020 and the three months ended June 30, 2019 does not include the assumed conversion of the preferred units because the impact would have been anti-dilutive. The calculation of diluted net income per common unit for the six months ended June 30, 2019 includes the assumed conversion of the preferred units.
The dilutive effect of the warrants is calculated using the treasury stock method, which assumes that the proceeds from the exercise of these instruments are used to purchase common units at the average market price for the period. The calculation of diluted net income (loss) per common unit for the three and six months ended June 30, 2020 did not include the net settlement of warrants to purchase 1.75 million common units at a strike price of $22.81 or the net settlement of warrants to purchase 2.25 million common units with a strike price of $34.00 because the impact would have been anti-dilutive. The calculation of the dilutive effect of the warrants for the three months and six months ended June 30, 2019 includes both the net settlement of warrants to purchase 1.75 million common units with a strike price of $22.81 and the net settlement of warrants to purchase 2.25 million common units with a strike price of $34.00.

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NATURAL RESOURCE PARTNERS L.P.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—CONTINUED
(Unaudited)

The following tables reconcile the numerator and denominator of the basic and diluted net income (loss) per common unit computations and calculates basic and diluted net income (loss) per common unit:
 For the Three Months Ended
June 30,
For the Six Months Ended June 30,
(In thousands, except per unit data)2020201920202019
Allocation of net income (loss)
Net income (loss) from continuing operations$(125,501) $19,106  $(106,722) $54,871  
Less: income attributable to preferred unitholders(7,613) (7,500) (15,113) (15,000) 
Net income (loss) from continuing operations attributable to common unitholders and general partner$(133,114) $11,606  $(121,835) $39,871  
Add (less): net loss (income) from continuing operations attributable to the general partner2,662  (232) 2,437  (797) 
Net income (loss) from continuing operations attributable to common unitholders$(130,452) $11,374  $(119,398) $39,074  
Net income from discontinued operations$  $245  $  $199  
Less: net income from discontinued operations attributable to the general partner  (5)   (4) 
Net income from discontinued operations attributable to common unitholders$  $240  $  $195  
Net income (loss)$(125,501) $19,351  $(106,722) $55,070  
Less: income attributable to preferred unitholders(7,613) (7,500) (15,113) (15,000) 
Net income attributable to common unitholders and general partner$(133,114) $11,851  $(121,835) $40,070  
Add (less): net loss (income) attributable to the general partner2,662  (237) 2,437  (801) 
Net income (loss) attributable to common unitholders$(130,452) $11,614  $(119,398) $39,269  
Basic net income (loss) per common unit
Weighted average common units—basic12,261  12,261  12,261  12,258  
Basic net income (loss) from continuing operations per common unit$(10.64) $0.93  $(9.74) $3.19  
Basic net income from discontinued operations per common unit$0.00  $0.02  $0.00  $0.02  
Basic net income (loss) per common unit$(10.64) $0.95  $(9.74) $3.20  
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NATURAL RESOURCE PARTNERS L.P.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—CONTINUED
(Unaudited)

 For the Three Months Ended
June 30,
For the Six Months Ended June 30,
(In thousands, except per unit data)2020201920202019
Diluted income (loss) per common unit
Weighted average common units—basic 12,261  12,261  12,261  12,258  
Plus: dilutive effect of preferred units      7,443  
Plus: dilutive effect of warrants  1,087    1,091  
Plus: dilutive effect of unvested unit-based awards—  40  —  36  
Weighted average common units—diluted12,261  13,388  12,261  20,828  
Net income (loss) from continuing operations$(125,501) $19,106  $(106,722) $54,871  
Less: income attributable to preferred unitholders(7,613) (7,500) (15,113) —  
Diluted net income (loss) from continuing operations attributable to common unitholders and general partner$(133,114) $11,606  $(121,835) $54,871  
Add (less): diluted net loss (income) from continuing operations attributable to the general partner2,662  (232) 2,437  (1,097) 
Diluted net income (loss) from continuing operations attributable to common unitholders$(130,452) $11,374  $(119,398) $53,774  
Diluted net income from discontinued operations attributable to common unitholders$  $240  $  $195  
Net income (loss)$(125,501) $19,351  $(106,722) $55,070  
Less: income attributable to preferred unitholders(7,613) (7,500) (15,113) —  
Diluted net income (loss) attributable to common unitholders and general partner$(133,114) $11,851  $(121,835) $55,070  
Add (less): diluted net loss (income) attributable to the general partner 2,662  (237) 2,437  (1,101) 
Diluted net income (loss) attributable to common unitholders$(130,452) $11,614  $(119,398) $53,969  
Diluted net income (loss) from continuing operations per common unit$(10.64) $0.85  $(9.74) $2.58  
Diluted net income (loss) from discontinued operations per common unit $0.00  $0.02  $0.00  $0.01  
Diluted net income (loss) per common unit$(10.64) $0.87  $(9.74) $2.59  
















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NATURAL RESOURCE PARTNERS L.P.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—CONTINUED
(Unaudited)




5.    Segment Information
The Partnership's segments are strategic business units that offer distinct products and services to different customers in different geographies within the U.S. and that are managed accordingly. NRP has the following two operating segments:
Coal Royalty and Other—consists primarily of coal royalty properties and coal-related transportation and processing assets. Other assets include industrial mineral royalty properties, aggregates royalty properties, oil and gas royalty properties and timber. The Partnership's coal reserves are primarily located in Appalachia, the Illinois Basin and the Northern Powder River Basin in the United States. The Partnership's industrial minerals and aggregates properties are located in various states across the United States. The Partnership's oil and gas royalty assets are primarily located in Louisiana and its timber assets are primarily located in West Virginia.
Soda Ash—consists of the Partnership's 49% non-controlling equity interest in Ciner Wyoming, a trona ore mining operation and soda ash refinery in the Green River Basin of Wyoming. Ciner Resources LP, the Partnership's operating partner, mines the trona, processes it into soda ash, and distributes the soda ash both domestically and internationally to the glass and chemicals industries.
Direct segment costs and certain other costs incurred at the corporate level that are identifiable and that benefit the Partnership's segments are allocated to the operating segments accordingly. These allocated costs generally include salaries and benefits, insurance, property taxes, legal, royalty, information technology and shared facilities services and are included in operating and maintenance expenses on the Partnership's Consolidated Statements of Comprehensive Income (Loss).
Corporate and Financing includes functional corporate departments that do not earn revenues. Costs incurred by these departments include interest and financing, corporate headquarters and overhead, centralized treasury, legal and accounting and other corporate-level activity not specifically allocated to a segment and are included in general and administrative expenses on the Partnership's Consolidated Statements of Comprehensive Income (Loss).




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NATURAL RESOURCE PARTNERS L.P.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—CONTINUED
(Unaudited)

The following table summarizes certain financial information for each of the Partnership's business segments:
Operating Segments
(In thousands)Coal Royalty and OtherSoda AshCorporate and FinancingTotal
For the Three Months Ended June 30, 2020
Revenues$33,604  $(3,058) $  $30,546  
Gain on asset sales and disposals465      465  
Operating and maintenance expenses8,188  29    8,217  
Depreciation, depletion and amortization2,062      2,062  
General and administrative expenses    3,621  3,621  
Asset impairments132,283      132,283  
Other expenses, net15    10,314  10,329  
Net loss from continuing operations(108,479) (3,087) (13,935) (125,501) 
For the Three Months Ended June 30, 2019
Revenues$69,890  $11,333  $  $81,223  
Gain on asset sales and disposals246      246  
Operating and maintenance expenses12,459      12,459  
Depreciation, depletion and amortization3,970      3,970  
General and administrative expenses    4,196  4,196  
Other expenses, net    41,738  41,738  
Net income (loss) from continuing operations53,707  11,333  (45,934) 19,106  
Income from discontinued operations      245  
For the Six Months Ended June 30, 2020
Revenues $67,546  $3,214  $  $70,760  
Gain on asset sales and disposals465      465  
Operating and maintenance expenses13,374  45    13,419  
Depreciation, depletion and amortization 4,074      4,074  
General and administrative expenses    7,534  7,534  
Asset impairments132,283      132,283  
Other expenses, net15    20,622  20,637  
Net income (loss) from continuing operations(81,735) 3,169  (28,156) (106,722) 
For the Six Months Ended June 30, 2019
Revenues $124,993  $23,015  $  $148,008  
Gain on asset sales and disposals502      502  
Operating and maintenance expenses20,819      20,819  
Depreciation, depletion and amortization 8,362      8,362  
General and administrative expenses    8,546  8,546  
Other expenses, net    55,912  55,912  
Net income (loss) from continuing operations96,314  23,015  (64,458) 54,871  
Income from discontinued operations      199  

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NATURAL RESOURCE PARTNERS L.P.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—CONTINUED
(Unaudited)

6.    Equity Investment
The Partnership accounts for its 49% investment in Ciner Wyoming using the equity method of accounting. Activity related to this investment is as follows:
For the Three Months Ended
June 30,
For the Six Months Ended June 30,
(In thousands)2020201920202019
Balance at beginning of period$261,224  $249,936  $263,080  $247,051  
Income (loss) allocation to NRP’s equity interests(2,047) 12,549  5,446  25,443  
Amortization of basis difference(1,011) (1,216) (2,232) (2,428) 
Other comprehensive income (loss)1,359  (824) 336  179  
Distribution(7,105) (9,310) (14,210) (19,110) 
Balance at end of period$252,420  $251,135  $252,420  $251,135  
The following table represents summarized financial information for Ciner Wyoming as derived from their respective unaudited financial statements for the three and six months ended June 30, 2020 and 2019:
For the Three Months Ended
June 30,
For the Six Months Ended June 30,
(In thousands)2020201920202019
Net sales$76,184  $129,794  $190,607  $260,230  
Gross profit2,242  32,533  23,659  66,635  
Net income (loss)(4,177) 25,610  11,115  51,925  

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NATURAL RESOURCE PARTNERS L.P.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—CONTINUED
(Unaudited)


7.    Mineral Rights, Net
The Partnership’s mineral rights consist of the following:
 June 30, 2020December 31, 2019
(In thousands)Carrying ValueAccumulated DepletionNet Book ValueCarrying ValueAccumulated DepletionNet Book Value
Coal properties$799,231  $(353,135) $446,096  $981,352  $(420,448) $560,904  
Aggregates properties9,799  (2,691) 7,108  41,486  (13,357) 28,129  
Oil and gas royalty properties12,354  (8,240) 4,114  12,395  (7,887) 4,508  
Other13,156  (1,611) 11,545  13,156  (1,601) 11,555  
Total mineral rights, net$834,540  $(365,677) $468,863  $1,048,389  $(443,293) $605,096  
Depletion expense related to the Partnership’s mineral rights is included in depreciation, depletion and amortization on its Consolidated Statements of Comprehensive Income (Loss) and totaled $2.0 million and $3.2 million for the three months ended June 30, 2020 and 2019, respectively, and $3.9 million and $6.7 million for the six months ended June 30, 2020 and 2019, respectively.
The Partnership recorded $132.3 million of expense to fully impair certain properties during the three and six months ended June 30, 2020, primarily related to weakened coal markets that resulted in termination of certain coal leases, changes to lessee mine plans resulting in permanent moves off certain of our coal properties and decreased oil and gas drilling activity which negatively impacted the outlook for NRP's frac sand properties. The Partnership has developed procedures to evaluate its long-lived assets for possible impairment periodically or whenever events or changes in circumstances indicate an asset's net book value may not be recoverable. Potential events or circumstances include, but are not limited to, specific events such as a reduction in economically recoverable reserves or production ceasing on a property for an extended period. This analysis is based on historic, current and future performance and considers both quantitative and qualitative information. While the Partnership's impairment evaluation as of June 30, 2020 incorporated an estimated impact of the global COVID-19 pandemic, there is significant uncertainty as to the severity and duration of this disruption. If the impact is worse than we currently estimate, an additional impairment charge may be recognized in future periods.

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NATURAL RESOURCE PARTNERS L.P.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—CONTINUED
(Unaudited)


8.    Debt, Net
The Partnership's debt consists of the following:
June 30,December 31,
(In thousands)20202019
NRP LP debt:
9.125% senior notes, with semi-annual interest payments in June and December, due June 2025, issued at par ("2025 Senior Notes")
$300,000  $300,000  
Opco debt:
Revolving credit facility$  $  
Senior Notes
5.05% with semi-annual interest payments in January and July, with annual principal payments in July, due July 2020
$6,780  $6,780  
5.55% with semi-annual interest payments in June and December, with annual principal payments in June, due June 2023
7,094  9,458  
4.73% with semi-annual interest payments in June and December, with annual principal payments in December, due December 2023
24,016  24,016  
5.82% with semi-annual interest payments in March and September, with annual principal payments in March, due March 2024
50,738  63,423  
8.92% with semi-annual interest payments in March and September, with annual principal payments in March, due March 2024
16,047  20,059  
5.03% with semi-annual interest payments in June and December, with annual principal payments in December, due December 2026
79,945  79,945  
5.18% with semi-annual interest payments in June and December, with annual principal payments in December, due December 2026
20,375  20,375  
Total Opco Senior Notes$204,995  $224,056  
Total debt at face value$504,995  $524,056  
Net unamortized debt issuance costs(7,108) (7,858) 
Total debt, net$497,887  $516,198  
Less: current portion of long-term debt(45,786) (45,776) 
Total long-term debt, net$452,101  $470,422  

NRP LP Debt
2025 Senior Notes
The 2025 Senior Notes were issued under an Indenture dated as of April 29, 2019 (the "2025 Indenture"), bear interest at 9.125% per year and mature on June 30, 2025. Interest is payable semi-annually on June 30 and December 30.
NRP and NRP Finance have the option to redeem the 2025 Senior Notes, in whole or in part, at any time on or after October 30, 2021, at the redemption prices (expressed as percentages of principal amount) of 104.563% for the 12-month period beginning October 30, 2021, 102.281% for the 12-month period beginning October 30, 2022, and thereafter at 100.000%, together, in each case, with any accrued and unpaid interest to the date of redemption. Furthermore, before October 30, 2021, NRP may on any one or more occasions redeem up to 35% of the aggregate principal amount of the 2025 Senior Notes with the net proceeds of certain public or private equity offerings at a redemption price of 109.125% of the principal amount of 2025 Senior Notes, plus any accrued and unpaid interest, if any, to the date of redemption, if at least 65% of the aggregate principal amount of the 2025 Senior Notes issued under the 2025 Indenture remains outstanding immediately after such redemption and the redemption occurs within 180 days of the closing date of such equity offering. In the event of a change of control, as defined in the 2025 Indenture, the holders of the 2025 Senior Notes may require us to purchase their 2025 Senior Notes at a purchase price equal to 101% of the principal amount of the 2025 Senior Notes, plus accrued and unpaid interest, if any. The 2025 Senior Notes were issued at par.
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NATURAL RESOURCE PARTNERS L.P.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—CONTINUED
(Unaudited)

The 2025 Senior Notes are the senior unsecured obligations of NRP and NRP Finance. The 2025 Senior Notes rank equal in right of payment to all existing and future senior unsecured debt of NRP and NRP Finance and senior in right of payment to any of NRP's subordinated debt. The 2025 Senior Notes are effectively subordinated in right of payment to all future secured debt of NRP and NRP Finance to the extent of the value of the collateral securing such indebtedness and are structurally subordinated in right of payment to all existing and future debt and other liabilities of our subsidiaries, including the Opco Credit Facility and each series of Opco’s existing senior notes. None of NRP's subsidiaries guarantee the 2025 Senior Notes. As of June 30, 2020 and December 31, 2019, NRP and NRP Finance were in compliance with the terms of the Indenture relating to their 2025 Senior Notes.
2022 Senior Notes
During the three months ended June 30, 2019, the Partnership redeemed the 2022 Senior Notes at a redemption price equal to 105.250% of the principal amount of the 2022 Senior Notes, plus accrued and unpaid interest. In connection with the early redemption, the Partnership paid an $18.1 million call premium and also wrote off $10.4 million of unamortized debt issuance costs and debt discount. These expenses are included in loss on extinguishment of debt on the Partnership's Consolidated Statements of Comprehensive Income (Loss).
Opco Debt
All of Opco’s debt is guaranteed by its wholly owned subsidiaries and is secured by certain of the assets of Opco and its wholly owned subsidiaries other than NRP Trona LLC. As of June 30, 2020 and December 31, 2019, Opco was in compliance with the terms of the financial covenants contained in its debt agreements.
Opco Credit Facility
In April 2019, the Partnership entered into the Fourth Amendment (the “Fourth Amendment”) to the Opco Credit Facility (the "Opco Credit Facility"). The Fourth Amendment extended the term of the Opco Credit Facility until April 2023. Lender commitments under the Opco Credit Facility remain at $100.0 million. The Opco Credit Facility contains financial covenants requiring Opco to maintain:
A leverage ratio of consolidated indebtedness to EBITDDA (as defined in the Opco Credit Facility) not to exceed 4.0x; provided, however, that if the Partnership increases its quarterly distribution to its common unitholders above $0.45 per common unit, the maximum leverage ratio under the Opco Credit Facility will permanently decrease from 4.0x to 3.0x; and
a fixed charge coverage ratio of consolidated EBITDDA to consolidated fixed charges (consisting of consolidated interest expense and consolidated lease expense) of not less than 3.5 to 1.0.
During the three and six months ended June 30, 2020 and 2019, the Partnership did not have any borrowings outstanding under the Opco Credit Facility and had $100 million in available borrowing capacity at both June 30, 2020 and December 31, 2019.
The Opco Credit Facility is collateralized and secured by liens on certain of Opco’s assets with carrying values of $368.5 million and $399.7 million classified as mineral rights, net and other assets, net on the Partnership’s Consolidated Balance Sheets as of June 30, 2020 and December 31, 2019, respectively.
Opco Senior Notes   
Opco has issued several series of private placement senior notes (the "Opco Senior Notes") with various interest rates and principal due dates. As of June 30, 2020 and December 31, 2019, the Opco Senior Notes had cumulative principal balances of $205.0 million and $224.1 million, respectively. Opco made mandatory principal payments of $19.1 million during the six months ended June 30, 2020 and $88.8 million during the six months ended June 30, 2019, which included a $49.3 million pre-payment as a result of the sale of the Partnership's construction aggregates business.
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NATURAL RESOURCE PARTNERS L.P.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—CONTINUED
(Unaudited)

The 8.92% Opco Senior Notes also provides that in the event that Opco’s leverage ratio of consolidated indebtedness to consolidated EBITDDA (as defined in the Note Purchase Agreements) exceeds 3.75 to 1.00 at the end of any fiscal quarter, then in addition to all other interest accruing on these notes, additional interest in the amount of 2.00% per annum shall accrue on the notes for the two succeeding quarters and for as long thereafter as the leverage ratio remains above 3.75 to 1.00. Opco has not exceeded the 3.75 to 1.00 ratio at the end of any fiscal quarter through June 30, 2020.
9.    Fair Value Measurements
Fair Value of Financial Assets and Liabilities
The Partnership’s financial assets and liabilities consist of cash and cash equivalents, contract receivable and debt. The carrying amounts reported on the Consolidated Balance Sheets for cash and cash equivalents approximate fair value due to their short-term nature. The Partnership uses available market data and valuation methodologies to estimate the fair value of its debt and contract receivable.
The following table shows the carrying amount and estimated fair value of the Partnership's debt and contract receivable:
 June 30, 2020December 31, 2019
(In thousands)Fair Value Hierarchy LevelCarrying
Value
Estimated
Fair Value
Carrying
Value
Estimated
Fair Value
Debt:
NRP 2025 Senior Notes1$294,621  $252,000  $294,084  $269,250  
Opco Senior Notes (1)
3203,266  172,196  222,114  201,090  
Opco Credit Facility3        
Assets:
Contract receivable (current and long-term) (2)
3$36,278  $27,478  $38,945  $33,460  
(1)The fair value of the Opco Senior Notes are estimated by management using quotations obtained for the NRP 2025 Senior Notes on the closing trading prices near period end, which were at 84% of par value at June 30, 2020.
(2)The fair value of the Partnership's contract receivable is determined based on the present value of future cash flow projections related to the underlying asset at a discount rate of 15% at June 30, 2020.
NRP has embedded derivatives in the preferred units related to certain conversion options, redemption features and the change of control provision that are accounted for separately from the preferred units as assets and liabilities at fair value on the Partnership's Consolidated Balance Sheets. Level 3 valuation of the embedded derivatives are based on numerous factors including the likelihood of the event occurring. The embedded derivatives are revalued quarterly and changes in their fair value would be recorded in other expenses, net on the Partnership's Consolidated Statements of Comprehensive Income (Loss). The embedded derivatives had zero value as of June 30, 2020 and December 31, 2019.

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NATURAL RESOURCE PARTNERS L.P.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—CONTINUED
(Unaudited)

10.    Related Party Transactions
Affiliates of our General Partner
The Partnership’s general partner does not receive any management fee or other compensation for its management of NRP. However, in accordance with the partnership agreement, the general partner and its affiliates are reimbursed for services provided to the Partnership and for expenses incurred on the Partnership’s behalf. Employees of Quintana Minerals Corporation ("QMC") and Western Pocahontas Properties Limited Partnership ("WPPLP"), affiliates of the Partnership, provide their services to manage the Partnership's business. QMC and WPPLP charge the Partnership the portion of their employee salary and benefits costs related to their employee services provided to NRP. These QMC and WPPLP employee management service costs are presented as operating and maintenance expenses and general and administrative expenses on the Partnership's Consolidated Statements of Comprehensive Income (Loss). NRP also reimburses overhead costs incurred by its affiliates to manage the Partnership's business. These overhead costs include certain rent, information technology, administration of employee benefits and other corporate services incurred by or on behalf of the Partnership’s general partner and its affiliates and are presented as operating and maintenance expenses and general and administrative expenses on the Partnership's Consolidated Statements of Comprehensive Income (Loss).
Direct general and administrative expenses charged to the Partnership by QMC and WPPLP are included on the Partnership's Consolidated Statement of Comprehensive Income (Loss) as follows:
For the Three Months Ended
June 30,
For the Six Months Ended June 30,
(In thousands)2020201920202019
Operating and maintenance expenses$1,544  $1,573  $3,167  $3,208  
General and administrative expenses881  886  1,779  1,849  
The Partnership had accounts payable to QMC of $0.4 million as of both June 30, 2020 and December 31, 2019 and $0.2 million and $0.1 million to WPPLP on its Consolidated Balance Sheets as of June 30, 2020 and December 31, 2019, respectively.
During the three months ended June 30, 2020 and 2019, the Partnership recognized $0.1 million and $0.5 million in operating and maintenance expenses, respectively, on its Consolidated Statements of Comprehensive Income (Loss) related to an overriding royalty agreement with WPPLP. These amounts were $0.2 million and $3.5 million during the six months ended June 30, 2020 and 2019, respectively. At June 30, 2020, the Partnership had $0.5 million of Other assets on its Consolidated Balance Sheet related to a prepaid royalty for this agreement and at December 31, 2019, the Partnership had $0.1 million of accounts payable to WPPLP related to this agreement.
Industrial Minerals Group LLC
Corbin J. Robertson, III, a Director of GP Natural Resource Partners LLC, owned a minority ownership interest in Industrial Minerals Group LLC (“Industrial Minerals”), which, through its subsidiaries, leases two of NRP's coal royalty properties in Central Appalachia. As of December 31, 2019, Mr. Robertson's affiliation with Industrial Minerals ended; accordingly, revenues are no longer classified as related party revenues as of such date. Coal royalty related revenues from Industrial Minerals totaled $0.3 million and $0.5 million for the three and six months ended June 30, 2019, respectively. The Partnership had accounts receivable from Industrial Minerals of $0.7 million on its Consolidated Balance Sheet as of December 31, 2019.
Quinwood Coal Company
In May 2017, a subsidiary of Alpha Natural Resources assigned two coal leases with us to Quinwood Coal Company ("Quinwood"), an entity wholly owned by Corbin J. Robertson III. Coal related revenues from Quinwood totaled $0.1 million for the three and six months ended June 30, 2019.

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NATURAL RESOURCE PARTNERS L.P.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—CONTINUED
(Unaudited)

11.    Major Customers
Revenues from customers that exceeded 10 percent of total revenues for any of the periods presented below are as follows:
 For the Three Months Ended June 30, For the Six Months Ended June 30,
 2020201920202019
(In thousands)RevenuesPercentRevenuesPercentRevenuesPercentRevenuesPercent
Foresight Energy (1)
$9,799  32 %$16,038  20 %$18,460  26 %$32,229  22 %
Contura Energy (1)
7,450  24 %12,614  16 %16,021  23 %23,725  16 %
(1)Revenues from Foresight Energy and Contura Energy are included within the Partnership's Coal Royalty and Other segment.
12.    Commitments and Contingencies
NRP is involved, from time to time, in various legal proceedings arising in the ordinary course of business. While the ultimate results of these proceedings cannot be predicted with certainty, Partnership management believes these ordinary course matters will not have a material effect on the Partnership’s financial position, liquidity or operations.
13.    Unit-Based Compensation
The Partnership's unit-based awards granted in 2020 and 2019 were valued using the closing price of NRP's units as of the grant date. The grant date fair value of these awards granted during the six months ended June 30, 2020 and 2019 were $3.5 million and $5.4 million, respectively. Total unit-based compensation expense associated with these awards was $0.9 million $0.4 million for the three months ended June 30, 2020 and 2019, respectively, and $1.7 million and $1.3 million for the six months ended June 30, 2020 and 2019, respectively, and is included in general and administrative expenses and operating and maintenance expenses on the Partnership's Consolidated Statements of Comprehensive Income (Loss). The unamortized cost associated with unvested outstanding awards as of June 30, 2020 is $5.1 million, which is to be recognized over a weighted average period of 2.1 years. The unamortized cost associated with unvested outstanding awards as of December 31, 2019 was $3.5 million.
A summary of the unit activity in the outstanding grants during 2020 is as follows:
(In thousands)Common UnitsWeighted Average Exercise Price
Outstanding at January 1, 2020157  $37.48  
Granted203  $17.20  
Fully vested and issued  $  
Forfeitures  $  
Outstanding at June 30, 2020360  $26.08  

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NATURAL RESOURCE PARTNERS L.P.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—CONTINUED
(Unaudited)

14.    Financing Transaction
The Partnership owns rail loadout and associated infrastructure at the Sugar Camp mine in the Illinois Basin operated by a subsidiary of Foresight Energy. The infrastructure at the Sugar Camp mine is leased to a subsidiary of Foresight Energy and is accounted for as a financing transaction (the "Sugar Camp lease"). The Sugar Camp lease expires in 2032 with renewal options for up to 80 additional years. Minimum payments are $5.0 million per year through the end of the lease term. The Partnership is also entitled to variable payments in the form of throughput fees determined based on the amount of coal transported and processed utilizing the Partnership's assets. In the event the Sugar Camp lease is renewed beyond 2032, payments become a fixed $10 thousand per year for the remainder of the renewed term.
The following table shows certain amounts related to the Partnership's Sugar Camp lease through 2032:
June 30,December 31,
(In thousands)20202019
Accounts receivable, net$608  $540  
Contract receivable, net (current and long-term)36,278  38,945  
Unearned income20,360  21,889  
Projected remaining payments, net$57,246  $61,374  

15.    Credit Losses
The Partnership is exposed to credit losses through collection of its short-term trade receivables resulting from contracts with customers and a long-term receivable resulting from a financing transaction with a customer. The Partnership records an allowance for current expected credit losses on these receivables based on the loss-rate method. NRP assessed the likelihood of collection of its receivables utilizing historical loss rates, current market conditions that included the estimated impact of the global COVID-19 pandemic, industry and macroeconomic factors, reasonable and supportable forecasts and facts or circumstances of individual customers and properties. Examples of these facts or circumstances include, but are not limited to, contract disputes or renegotiations with the customer and evaluation of short and long-term economic viability of the contracted property. For its long-term contract receivable, management reverts to the historical loss experience immediately after the reasonable and supportable forecast period ends.

As of June 30, 2020, NRP recorded the following current expected credit loss (“CECL”) related to its receivables and long-term contract receivable:
(In thousands)GrossCECL AllowanceNet
Receivables$29,840  $(2,042) $27,798  
Long-term contract receivable35,912  (1,603) 34,309  
Total$65,752  $(3,645) $62,107  

NRP recorded $0.1 million and $(0.3) million in operating and maintenance expenses on its Consolidated Statement of Comprehensive Income (Loss) related to the change in CECL allowance during the three and six months ended June 30, 2020. In addition, we recorded $3.7 million and $3.9 million of bad debt expense due to balances deemed to be non-collectible in the three and six months ended June 30, 2020, respectively.

NRP has procedures in place to monitor its ongoing credit exposure through timely review of counterparty balances against contract terms and due dates, account and financing receivable reconciliation, bankruptcy monitoring, lessee audits and dispute resolution. The Partnership may employ legal counsel or collection specialist to pursue recovery of defaulted receivables.


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NATURAL RESOURCE PARTNERS L.P.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—CONTINUED
(Unaudited)

16.    Leases
Lessee Accounting
As of June 30, 2020, the Partnership had one operating lease for an office building that is owned by WPPLP. On January 1, 2019, the Partnership entered into a new lease of the building with a five-year base term and five additional five-year renewal options. Upon lease commencement and as of June 30, 2020, the Partnership was reasonably certain to exercise all renewal options included in the lease and capitalized the right-of-use asset and corresponding lease liability on its Consolidated Balance Sheets using the present value of the future lease payments over 30 years. The Partnership's right-of-use asset and lease liability included within other assets and other non-current liabilities, respectively, on its Consolidated Balance Sheets totaled $3.5 million at both June 30, 2020 and December 31, 2019. During the three and six months ended June 30, 2020 and 2019, the Partnership incurred total operating lease expenses of $0.1 million and $0.2 million, respectively included in both operating and maintenance expenses and general and administrative expenses on its Consolidated Statements of Comprehensive Income (Loss).
The following table details the maturity analysis of the Partnership's operating lease liability and reconciles the undiscounted cash flows to the operating lease liability included on its Consolidated Balance Sheet:
Remaining Annual Lease Payments (In thousands)As of June 30, 2020
2020$241  
2021483  
2022483  
2023483  
2024483  
After 202411,597  
Total lease payments (1)
$13,770  
Less: present value adjustment (2)
(10,269) 
Total operating lease liability$3,501  
(1)The remaining lease term of the Partnership's operating lease is 28.5 years.
(2)The present value of the operating lease liability on the Partnership's Consolidated Balance Sheets was calculated using a 13.5% discount rate which represents the Partnership's estimated incremental borrowing rate under the lease. As the Partnership's lease does not provide an implicit rate, the Partnership estimated the incremental borrowing rate at the time the lease was entered into by utilizing the rate of the Partnership's secured debt and adjusting it for factors that reflect the profile of borrowing over the 30-year expected lease term.

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NATURAL RESOURCE PARTNERS L.P.
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS—CONTINUED
(Unaudited)

17.    Subsequent Events
The following represents material events that have occurred subsequent to June 30, 2020 through the time of the Partnership’s filing of its Quarterly Report on Form 10-Q with the SEC:
Common Unit and Preferred Unit Distributions
In August 2020, the Board of Directors declared a distribution of $0.45 per common unit with respect to the second quarter of 2020. The Board of Directors also declared a cash distribution on NRP's Preferred Units with respect to the second quarter of 2020 totaling $7.5 million.





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ITEM 2. MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS
The following review of operations for the three and six month periods ended June 30, 2020 and 2019 should be read in conjunction with our consolidated financial statements and the notes to consolidated financial statements included in this Form 10-Q and with the consolidated financial statements, notes to consolidated financial statements and management’s discussion and analysis included in the Natural Resource Partners L.P. Annual Report on Form 10-K for the year ended December 31, 2019.
As used herein, unless the context otherwise requires: "we," "our," "us" and the "Partnership" refer to Natural Resource Partners L.P. and, where the context requires, our subsidiaries. References to "NRP" and "Natural Resource Partners" refer to Natural Resource Partners L.P. only, and not to NRP (Operating) LLC or any of Natural Resource Partners L.P.’s subsidiaries. References to "Opco" refer to NRP (Operating) LLC, a wholly owned subsidiary of NRP, and its subsidiaries. NRP Finance Corporation ("NRP Finance") is a wholly owned subsidiary of NRP and a co-issuer with NRP on the 9.125% senior notes due 2025 (the "2025 Senior Notes").
INFORMATION REGARDING FORWARD-LOOKING STATEMENTS
Statements included in this 10-Q may constitute forward-looking statements. In addition, we and our representatives may from time to time make other oral or written statements which are also forward-looking statements. Such forward-looking statements include, among other things, statements regarding: the effects of the global COVID-19 pandemic; our business strategy; our liquidity and access to capital and financing sources; our financial strategy; prices of and demand for coal, trona and soda ash, and other natural resources; estimated revenues, expenses and results of operations; projected production levels by our lessees; Ciner Wyoming LLC’s ("Ciner Wyoming's") trona mining and soda ash refinery operations; distributions from our soda ash joint venture; the impact of governmental policies, laws and regulations, as well as regulatory and legal proceedings involving us, and of scheduled or potential regulatory or legal changes; and global and U.S. economic conditions.
These forward-looking statements speak only as of the date hereof and are made based upon our current plans, expectations, estimates, assumptions and beliefs concerning future events impacting us and involve a number of risks and uncertainties. We caution that forward-looking statements are not guarantees and that actual results could differ materially from those expressed or implied in the forward-looking statements. You should not put undue reliance on any forward-looking statements. See "Item 1A. Risk Factors" included in this Form 10-Q and in our Annual Report on Form 10-K for the year ended December 31, 2019 for important factors that could cause our actual results of operations or our actual financial condition to differ.
NON-GAAP FINANCIAL MEASURES
Adjusted EBITDA
Adjusted EBITDA is a non-GAAP financial measure that we define as net income (loss) from continuing operations less equity earnings (loss) from unconsolidated investment, net income attributable to non-controlling interest and gain on reserve swap; plus total distributions from unconsolidated investment, interest expense, net, debt modification expense, loss on extinguishment of debt, depreciation, depletion and amortization and asset impairments. Adjusted EBITDA should not be considered an alternative to, or more meaningful than, net income or loss, net income or loss attributable to partners, operating income, cash flows from operating activities or any other measure of financial performance presented in accordance with GAAP as measures of operating performance, liquidity or ability to service debt obligations. There are significant limitations to using Adjusted EBITDA as a measure of performance, including the inability to analyze the effect of certain recurring items that materially affect our net income (loss), the lack of comparability of results of operations of different companies and the different methods of calculating Adjusted EBITDA reported by different companies. In addition, Adjusted EBITDA presented below is not calculated or presented on the same basis as Consolidated EBITDA as defined in our partnership agreement or Consolidated EBITDDA as defined in Opco's debt agreements. For a description of Opco's debt agreements, see Note 8. Debt, Net in the Notes to Consolidated Financial Statements included herein as well as in "Item 8. Financial Statements and Supplementary Data—Note 12. Debt, Net" in our Annual Report on Form 10-K for the year ended December 31, 2019. Adjusted EBITDA is a supplemental performance measure used by our management and by external users of our financial statements, such as investors, commercial banks, research analysts and others to assess the financial performance of our assets without regard to financing methods, capital structure or historical cost basis.

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Distributable Cash Flow
Distributable cash flow ("DCF") represents net cash provided by (used in) operating activities of continuing operations plus distributions from unconsolidated investment in excess of cumulative earnings, proceeds from asset sales and disposals, including sales of discontinued operations, and return of long-term contract receivables; less maintenance capital expenditures and distributions to non-controlling interest. DCF is not a measure of financial performance under GAAP and should not be considered as an alternative to cash flows from operating, investing or financing activities. DCF may not be calculated the same for us as for other companies. In addition, DCF presented below is not calculated or presented on the same basis as distributable cash flow as defined in our partnership agreement, which is used as a metric to determine whether we are able to increase quarterly distributions to our common unitholders. DCF is a supplemental liquidity measure used by our management and by external users of our financial statements, such as investors, commercial banks, research analysts and others to asses our ability to make cash distributions and repay debt.
Free Cash Flow
Free cash flow ("FCF") represents net cash provided by (used in) operating activities of continuing operations plus distributions from unconsolidated investment in excess of cumulative earnings and return of long-term contract receivables; less maintenance and expansion capital expenditures, cash flow used in acquisition costs classified as investing or financing activities and distributions to non-controlling interest. FCF is calculated before mandatory debt repayments. FCF is not a measure of financial performance under GAAP and should not be considered as an alternative to cash flows from operating, investing or financing activities. FCF may not be calculated the same for us as for other companies. FCF is a supplemental liquidity measure used by our management and by external users of our financial statements, such as investors, commercial banks, research analysts and others to assess our ability to make cash distributions and repay debt.
Introduction
The following discussion and analysis presents management's view of our business, financial condition and overall performance. Our discussion and analysis consists of the following subjects:
Executive Overview
Results of Operations
Liquidity and Capital Resources
Off-Balance Sheet Transactions
Related Party Transactions
Summary of Critical Accounting Estimates
Recent Accounting Standards
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Executive Overview
We are a diversified natural resource company engaged principally in the business of owning, managing and leasing a diversified portfolio of mineral properties in the United States, including interests in coal and other natural resources and own a non-controlling 49% interest in Ciner Wyoming LLC ("Ciner Wyoming"), a trona ore mining and soda ash production business. Our common units trade on the New York Stock Exchange under the symbol "NRP." Our business is organized into two operating segments:
Coal Royalty and Other—consists primarily of coal royalty properties and coal-related transportation and processing assets. Other assets include industrial mineral royalty properties, aggregates royalty properties, oil and gas royalty properties and timber. Our coal reserves are primarily located in Appalachia, the Illinois Basin and the Northern Powder River Basin in the United States. Our industrial minerals and aggregates properties are located in various states across the United States, our oil and gas royalty assets are primarily located in Louisiana and our timber assets are primarily located in West Virginia.
Soda Ash—consists of our 49% non-controlling equity interest in Ciner Wyoming, a trona ore mining and soda ash production business located in the Green River Basin of Wyoming. Ciner Resources LP, our operating partner, mines the trona, processes it into soda ash, and distributes the soda ash both domestically and internationally into the glass and chemicals industries.
Corporate and Financing includes functional corporate departments that do not earn revenues. Costs incurred by these departments include interest and financing, corporate headquarters and overhead, centralized treasury, legal and accounting and other corporate-level activity not specifically allocated to a segment.
The global COVID-19 pandemic has had a significant negative impact on demand for steel, electricity and glass, which translates to lower demand for the coal and soda ash we produce. We continue to employ remote work protocols and are conducting business as usual despite the pandemic. Although we are unable to predict the severity or duration of the impact on our business, we currently have approximately $210 million of liquidity. In addition, our $300 million of parent company notes does not mature until 2025. Accordingly, we believe we are well-positioned to manage through the downturn.
Our financial results by segment for the six months ended June 30, 2020 are as follows:
Operating Segments
(In thousands)Coal Royalty and OtherSoda AshCorporate and FinancingTotal
Revenues and other income$68,011  $3,214  $—  $71,225  
Net income (loss) from continuing operations$(81,735) $3,169  $(28,156) $(106,722) 
Adjusted EBITDA (1)
$54,637  $14,165  $(7,534) $61,268  
Cash flow provided by (used in) continuing operations
Operating activities$62,509  $14,166  $(26,585) $50,090  
Investing activities$637  $—  $—  $637  
Financing activities$—  $—  $(38,164) $(38,164) 
Distributable cash flow (1)
$64,146  $14,166  $(26,585) $51,661  
Free cash flow (1)
$62,639  $14,166  $(26,585) $50,220  
(1)See "—Results of Operations" below for reconciliations to the most comparable GAAP financial measures.
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Current Results/Market Commentary
Coal Royalty and Other Business Segment

Our lessees sold 8.4 million tons of coal from our properties in the first six months of 2020 and we derived approximately 70% of our coal royalty revenues and approximately 65% of our coal royalty sales volumes from metallurgical coal during the same period. Revenues and other income in the first six months of 2020 were lower by $57.5 million, as compared to the prior year period. This decrease is primarily a result of a weakened market for metallurgical coal as compared to the prior year period due to a decline in global steel demand. As a result, both sales volumes and prices for metallurgical coal sold were lower in the first six months of 2020 compared to the prior year period. In addition, weaker domestic and export thermal coal markets compared to the prior year period resulted in lower revenue from our thermal coal properties. Domestic and export thermal coal markets remained challenged by lower utility demand, continued low natural gas prices and the secular shift to renewable energy. The COVID-19 pandemic has compounded already weak coal pricing and demand, and our coal lessees are seeing significant negative impacts on their businesses.

During the second quarter of 2020, our largest lessee, Foresight Energy, emerged from bankruptcy. We entered into lease amendments pursuant to which Foresight agreed to pay us fixed cash payments of $48.75 million in 2020 and $42.0 million in 2021 to satisfy all obligations arising out of the existing various coal mining leases and transportation infrastructure fee agreements between us and Foresight Energy for calendar years 2020 and 2021. Through the first six months of 2020, we received $21.2 million of the $48.75 million due to us in 2020. Beginning in January 2022, Foresight payment obligations will be calculated in accordance with the provisions of the original lease agreements, except with respect to the Macoupin mine. While the Macoupin mine is idled, Foresight will pay an annual fee of $2.0 million to us each year through 2023 to continue to lease our coal reserves at Macoupin.

We recorded $132.3 million in non-cash asset impairment expense in the second quarter of 2020, primarily related to weakened coal markets that resulted in termination of certain coal leases, changes to lessee mine plans resulting in permanent moves off certain of our coal properties and decreased oil and gas drilling activity which negatively impacted the outlook for our frac sand properties.
Soda Ash Business Segment
Ciner Wyoming was negatively impacted by the COVID-19 pandemic as lower activity in the global auto, container and construction industries reduced demand for glass and soda ash. Revenues and other income in the second quarter of 2020 were lower by $14.4 million compared to the prior year quarter primarily due to a combination of lower pricing and volumes sold. Distributions received from Ciner Wyoming were $7.1 million in the second quarter of 2020 as compared to $9.3 million in the second quarter of 2019.
Global soda ash prices are down roughly 25% from a year ago, to levels that we believe are below the cost of production of the world’s synthetic soda ash producers and some of the natural soda ash producers. We expect the soda ash industry to face significant headwinds until the global economy gets back on track. While we believe our facility is competitively positioned as one of the lowest cost producers of soda ash in the world, we expect soda ash markets to continue to be challenged over the next several quarters.
Ciner Wyoming continues to develop plans for a significant capacity expansion capital project. However, they have delayed the timing of significant costs related to this project until they have more clarity and visibility into the impact of the COVID-19 pandemic on its business. In addition, in order to achieve greater financial flexibility during the COVID-19 pandemic, Ciner Wyoming suspended its quarterly distribution for the second quarter which would have been paid to us in August 2020. Ciner Wyoming will continue to evaluate, on a quarterly basis whether to reinstate the distribution, which will be dependent in part on its cash reserves, liquidity, total debt levels and anticipated capital expenditures.
Business Outlook

The global COVID-19 pandemic continues to affect businesses across the world. Although we are unable to predict the severity or duration of the COVID-19 pandemic's impact on our business, we continue to maintain strong cash balances and liquidity, and efforts to de-lever and de-risk the Partnership over the past five years have prepared NRP to operate through this downturn.

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Results of Operations
Second Quarter of 2020 and 2019 Compared
Revenues and Other Income
The following table includes our revenues and other income by operating segment:
For the Three Months Ended June 30,DecreasePercentage
Change
Operating Segment (In thousands)20202019
Coal Royalty and Other$34,069  $70,136  $(36,067) (51)%
Soda Ash (3,058) 11,333  (14,391) (127)%
Total$31,011  $81,469  $(50,458) (62)%

The changes in revenues and other income is discussed for each of the operating segments below:
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Coal Royalty and Other
The following table presents coal sales volumes, coal royalty revenue per ton and coal royalty revenues by major coal producing region, the significant categories of other revenues and other income:
 For the Three Months Ended June 30,Increase
(Decrease)
Percentage
Change
(In thousands, except per ton data)20202019
Coal sales volumes (tons)
Appalachia
Northern 87  1,625  (1,538) (95)%
Central2,463  3,825  (1,362) (36)%
Southern426  386  40  10 %
Total Appalachia2,976  5,836  (2,860) (49)%
Illinois Basin578  535  43  %
Northern Powder River Basin340  591  (251) (42)%
Total coal sales volumes3,894  6,962  (3,068) (44)%
Coal royalty revenue per ton
Appalachia
Northern $2.74  $0.86  $1.88  218 %
Central4.04  6.03  (1.99) (33)%
Southern4.96  6.69  (1.73) (26)%
Illinois Basin1.97  4.51  (2.54) (56)%
Northern Powder River Basin3.15  2.75  0.40  15 %
Combined average coal royalty revenue per ton3.73  4.46  (0.73) (16)%
Coal royalty revenues
Appalachia
Northern $238  $1,393  $(1,155) (83)%
Central9,951  23,055  (13,104) (57)%
Southern2,111  2,581  (470) (18)%
Total Appalachia12,300  27,029  (14,729) (54)%
Illinois Basin1,137  2,411  (1,274) (53)%
Northern Powder River Basin1,071  1,624  (553) (34)%
Unadjusted coal royalty revenues14,508  31,064  (16,556) (53)%
Coal royalty adjustment for minimum leases (1)
(3,661) (361) (3,300) (914)%
Total coal royalty revenues$10,847  $30,703  $(19,856) (65)%
Other revenues
Production lease minimum revenues (1)
$8,485  $15,879  $(7,394) (47)%
Minimum lease straight-line revenues (1)
4,987  3,854  1,133  29 %
Property tax revenues761  1,377  (616) (45)%
Wheelage revenues 1,584  1,945  (361) (19)%
Coal overriding royalty revenues 683  3,999  (3,316) (83)%
Lease amendment revenues890  4,414  (3,524) (80)%
Aggregates royalty revenues271  1,237  (966) (78)%
Oil and gas royalty revenues2,742  482  2,260  469 %
Other revenues416  726  (310) (43)%
Total other revenues$20,819  $33,913  $(13,094) (39)%
Coal royalty and other $31,666  $64,616  $(32,950) (51)%
Transportation and processing services revenues 1,938  5,274  (3,336) (63)%
Gain on asset sales and disposals465  246  219  89 %
Total Coal Royalty and Other segment revenues and other income$34,069  $70,136  $(36,067) (51)%
(1)Beginning April 1, 2020 and effective January 1, 2020, certain revenues previously classified as coal royalty revenues are classified as production lease minimum revenues or minimum lease straight-line revenues due to contract modifications that fixed consideration paid to us over a two-year period.
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Coal Royalty Revenues
Approximately 80% of coal royalty revenues and approximately 70% of coal royalty sales volumes were derived from metallurgical coal during the three months ended June 30, 2020. Coal royalty revenues decreased $19.9 million period-over-period primarily driven by the weakened coal markets that resulted in lower coal sales volumes and prices. The discussion of these decreases by region is as follows:
Appalachia: Sales volumes decreased 49% and coal royalty revenues decreased $14.7 million primarily due to weakened coal demand compounded by the COVID-19 pandemic.
Illinois Basin: Sales volumes increased 8% and coal royalty revenues decreased $1.3 million primarily due to weakened coal pricing compounded by the COVID-19 pandemic.
Northern Powder River Basin: Sales volumes decreased 42% and coal royalty revenues decreased $0.6 million primarily due to our lessee mining off of our property in accordance with its mine plan in 2020, partially offset by a 15% increase in sales prices as compared to the prior year quarter.
Other Revenues
Other revenues decreased $13.1 million primarily due to the following:
A $7.4 million decrease in production lease minimum revenues primarily as a result of Macoupin lease amendment and lessee forfeitures of recoupable balances in the second quarter of 2019 from minimums paid in prior periods;
A $3.3 million decrease in coal overriding royalty revenues primarily driven by lower activity at our Williamson property in the Illinois Basin.
A $3.5 million decrease in lease amendment revenues year-over-year.
Transportation and Processing Services Revenues
Transportation and processing services revenues decreased $3.3 million primarily due to idling of the Macoupin mine where we own loadout and other transportation assets.
Soda Ash
Revenues and other income related to our Soda Ash segment decreased $14.4 million primarily due to a combination of lower pricing and volumes sold. Ciner Wyoming was negatively impacted by the COVID-19 pandemic as lower activity in the global auto, container and construction industries reduced demand for glass and soda ash.
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Operating and Other Expenses
The following table presents the significant categories of our consolidated operating and other expenses:
For the Three Months Ended June 30,Increase
(Decrease)
Percentage
Change
(In thousands)20202019
Operating expenses
Operating and maintenance expenses$8,217  $12,459  $(4,242) (34)%
Depreciation, depletion and amortization2,062  3,970  (1,908) (48)%
General and administrative expenses3,621  4,196  (575) (14)%
Asset impairments132,283  —  132,283  100 %
Total operating expenses$146,183  $20,625  $125,558  609 %
Other expenses, net
Interest expense, net$10,329  $12,456  $(2,127) (17)%
Loss on extinguishment of debt—  29,282  (29,282) (100)%
Total other expenses, net$10,329  $41,738  $(31,409) (75)%

Total operating expenses increased $125.6 million primarily due to the following:
Asset impairments increased $132.3 million due to weakened coal markets that resulted in termination of certain coal leases, changes to lessee mine plans resulting in permanent moves off certain of our coal properties and decreased oil and gas drilling activity which negatively impacted the outlook for NRP's frac sand properties.
Operating and maintenance expenses include costs to manage the Coal Royalty and Other and Soda Ash segments and primarily consist of royalty, tax, employee-related and legal costs and bad debt expense. These costs decreased $4.2 million compared to the prior year quarter primarily due to decreased bad debt expense period-over-period.
Depreciation, depletion and amortization expense decreased $1.9 million due to lower coal sales volumes at certain properties.
Total other expenses, net decreased $31.4 million primarily due to the following:
Loss on extinguishment of debt of $29.3 million in 2019 related to the 105.25% premium paid to redeem the 2022 Senior Notes in the second quarter of 2019 as well as the write-off of unamortized debt issuance costs and debt discount related to the 2022 Senior Notes.
Interest expense, net decreased $2.1 million primarily due to lower debt balances during the second quarter of 2020 as a result of debt repayments made over the past twelve months.
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Adjusted EBITDA (Non-GAAP Financial Measure)
The following table reconciles net income (loss) from continuing operations (the most comparable GAAP financial measure) to Adjusted EBITDA by business segment:
Operating Segments
For the Three Months Ended (In thousands)Coal Royalty and OtherSoda AshCorporate and FinancingTotal
June 30, 2020
Net loss from continuing operations$(108,479) $(3,087) $(13,935) $(125,501) 
Less: equity earnings from unconsolidated investment—  3,058  —  3,058  
Add: total distributions from unconsolidated investment—  7,105  —  7,105  
Add: interest expense, net15  —  10,314  10,329  
Add: depreciation, depletion and amortization2,062  —  —  2,062  
Add: asset impairments132,283  —  —  132,283  
Adjusted EBITDA$25,881  $7,076  $(3,621) $29,336  
June 30, 2019
Net income (loss) from continuing operations$53,707  $11,333  $(45,934) $19,106  
Less: equity earnings from unconsolidated investment—  (11,333) —  (11,333) 
Add: total distributions from unconsolidated investment—  9,310  —  9,310  
Add: interest expense, net—  —  12,456  12,456  
Add: loss on extinguishment of debt—  —  29,282  29,282  
Add: depreciation, depletion and amortization3,970  —  —  3,970  
Adjusted EBITDA$57,677  $9,310  $(4,196) $62,791  

Adjusted EBITDA decreased $33.5 million primarily due to the following:
Coal Royalty and Other Segment
Adjusted EBITDA decreased $31.8 million primarily as a result of the decrease in revenues and other income driven by the weakened coal markets in the second quarter of 2020 as compared to the second quarter of 2019, partially offset by the decrease in operating and maintenance expenses as discussed above.
Soda Ash Segment
Adjusted EBITDA decreased $2.2 million as a result of lower cash distributions received from Ciner Wyoming in second quarter of 2020 as compared to the second quarter of 2019.

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Distributable Cash Flow ("DCF") and Free Cash Flow ("FCF") (Non-GAAP Financial Measures)
The following table presents the three major categories of the statement of cash flows by business segment:
Operating Segments
For the Three Months Ended (In thousands)Coal Royalty and OtherSoda AshCorporate and FinancingTotal
June 30, 2020
Cash flow provided by (used in) continuing operations
Operating activities$31,953  $7,077  $(19,095) $19,935  
Investing activities365  —  —  365  
Financing activities—  —  (9,978) (9,978) 
June 30, 2019
Cash flow provided by (used in) continuing operations
Operating activities$55,811  $9,310  $(11,762) $53,359  
Investing activities698  —  —  698  
Financing activities—  —  (97,989) (97,989) 
The following table reconciles net cash provided by (used in) operating activities of continuing operations (the most comparable GAAP financial measure) by business segment to DCF and FCF:
Operating Segments
For the Three Months Ended (In thousands)Coal Royalty and OtherSoda AshCorporate and FinancingTotal
June 30, 2020
Net cash provided by (used in) operating activities of continuing operations$31,953  $7,077  $(19,095) $19,935  
Add: proceeds from asset sales and disposals507  —  —  507  
Add: return of long-term contract receivable 858  —  —  858  
Distributable cash flow$33,318  $7,077  $(19,095) $21,300  
Less: proceeds from asset sales and disposals(507) —  —  (507) 
Less: acquisition costs (1,000) —  —  (1,000) 
Free cash flow$31,811  $7,077  $(19,095) $19,793  
June 30, 2019
Net cash provided by (used in) operating activities of continuing operations$55,811  $9,310  $(11,762) $53,359  
Add: proceeds from sale of assets247  —  —  247  
Add: proceeds from sale of discontinued operations—  —  —  (44) 
Add: return of long-term contract receivable 451  —  —  451  
Distributable cash flow$56,509  $9,310  $(11,762) $54,013  
Less: proceeds from sale of assets(247) —  —  (247) 
Less: proceeds from sale of discontinued operations—  —  —  44  
Free cash flow$56,262  $9,310  $(11,762) $53,810  





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DCF and FCF decreased $32.7 million and $34.0 million, respectively, primarily due to the following:
Coal Royalty and Other Segment
DCF and FCF decreased $23.2 million and $24.5 million, respectively, primarily as a result of the weakened coal markets in the second quarter of 2020.
Soda Ash Segment
DCF and FCF decreased $2.2 million as a result of lower cash distributions received from Ciner Wyoming in the second quarter of 2019.
Corporate and Financing Segment
DCF and FCF decreased $7.3 million primarily due to the timing of interest payments on our parent company bonds that were refinanced in the second quarter of 2019. Interest is due in June and December on the new 9.125% Notes, compared to March and September on the previous 10.5% Notes.


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Results of Operations
First Six Months of 2020 and 2019 Compared
Revenues and Other Income
The following table includes our revenues and other income by operating segment:
For the Six Months Ended June 30,DecreasePercentage
Change
Operating Segment (In thousands)20202019
Coal Royalty and Other$68,011  $125,495  $(57,484) (46)%
Soda Ash 3,214  23,015  (19,801) (86)%
Total$71,225  $148,510  $(77,285) (52)%

The changes in revenues and other income is discussed for each of the operating segments below:
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Coal Royalty and Other
The following table presents coal sales volumes, coal royalty revenue per ton and coal royalty revenues by major coal producing region, the significant categories of other revenues and other income:
 For the Six Months Ended June 30,Increase
(Decrease)
Percentage
Change
(In thousands, except per ton data)20202019
Coal sales volumes (tons)
Appalachia
Northern414  2,484  (2,070) (83)%
Central5,396  7,247  (1,851) (26)%
Southern648  734  (86) (12)%
Total Appalachia6,458  10,465  (4,007) (38)%
Illinois Basin1,083  1,095  (12) (1)%
Northern Powder River Basin867  1,447  (580) (40)%
Total coal sales volumes8,408  13,007  (4,599) (35)%
Coal royalty revenue per ton
Appalachia
Northern$2.01  $2.19  $(0.18) (8)%
Central4.47  6.03  (1.56) (26)%
Southern4.68  7.60  (2.92) (38)%
Illinois Basin3.08  4.64  (1.56) (34)%
Northern Powder River Basin3.75  2.66  1.09  41 %
Combined average coal royalty revenue per ton4.11  4.89  (0.78) (16)%
Coal royalty revenues
Appalachia
Northern$831  $5,438  $(4,607) (85)%
Central24,124  43,699  (19,575) (45)%
Southern3,034  5,578  (2,544) (46)%
Total Appalachia27,989  54,715  (26,726) (49)%
Illinois Basin3,336  5,081  (1,745) (34)%
Northern Powder River Basin3,248  3,855  (607) (16)%
Unadjusted coal royalty revenues34,573  63,651  (29,078) (46)%
Coal royalty adjustment for minimum leases (1)
(4,624) (817) (3,807) (466)%
Total coal royalty revenues$29,949  $62,834  $(32,885) (52)%
Other revenues
Production lease minimum revenues (1)
$9,287  $18,579  $(9,292) (50)%
Minimum lease straight-line revenues (1)
8,796  7,170  1,626  23 %
Property tax revenues2,360  2,810  (450) (16)%
Wheelage revenues 3,788  3,360  428  13 %
Coal overriding royalty revenues 2,005  7,974  (5,969) (75)%
Lease amendment revenues1,733  5,185  (3,452) (67)%
Aggregates royalty revenues847  2,701  (1,854) (69)%
Oil and gas royalty revenues3,845  2,201  1,644  75 %
Other revenues489  1,304  (815) (63)%
Total other revenues$33,150  $51,284  $(18,134) (35)%
Coal royalty and other $63,099  $114,118  $(51,019) (45)%
Transportation and processing services revenues 4,447  10,875  (6,428) (59)%
Gain on asset sales and disposals465  502  (37) (7)%
Total Coal Royalty and Other segment revenues and other income$68,011  $125,495  $(57,484) (46)%
(1)Beginning April 1, 2020 and effective January 1, 2020, certain revenues previously classified as coal royalty revenues are classified as production lease minimum revenues or minimum lease straight-line revenues due to contract modifications that fixed consideration paid to us over a two-year period.
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Coal Royalty Revenues
Total coal royalty revenues decreased $32.9 million from 2019 to 2020 primarily driven by weakened coal markets that resulted in lower coal sales volume. The discussion of these decreases by region is as follows:
Appalachia: Sales volumes decreased 38% and revenues decreased $26.7 million primarily due to weakened coal demand compounded by the COVID-19 pandemic.
Illinois Basin: Sales volumes decreased 1% and coal royalty revenues decreased $1.7 million primarily due to weakened coal demand compounded by the COVID-19 pandemic.
Northern Powder River Basin: Sales volumes decreased 40% and coal royalty revenues decreased $0.6 million primarily due to our lessee mining off of our property in accordance with its mine plan in 2020, partially offset by a 41% increase in sales prices as compared to the prior year.
Other Revenues
Other revenues decreased $18.1 million primarily due to the following:
A $9.3 million decrease in production lease minimum revenues primarily as a result of Macoupin lease amendment and lessee forfeitures of recoupable balances in the second quarter of 2019 from minimums paid in prior periods;
A $6.0 million decrease in coal overriding royalty revenues primarily driven by lower activity at our Williamson property in the Illinois Basin.
A $3.5 million decrease in lease amendment revenues year-over-year.
Transportation and Processing Services Revenues
Transportation and processing services revenues decreased $6.4 million primarily due to idling of the Macoupin mine where we own loadout and other transportation assets.
Soda Ash

Revenues and other income related to our Soda Ash segment decreased $19.8 million compared to the prior year primarily due to a combination of lower pricing and volumes sold. Ciner Wyoming was negatively impacted by the COVID-19 pandemic as lower activity in the global auto, container and construction industries reduced demand for glass and soda ash.


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Operating and Other Expenses
The following table presents the significant categories of our consolidated operating and other expenses:
For the Six Months Ended June 30,DecreasePercentage
Change
(In thousands)20202019
Operating expenses
Operating and maintenance expenses$13,419  $20,819  $(7,400) (36)%
Depreciation, depletion and amortization4,074  8,362  (4,288) (51)%
General and administrative expenses7,534  8,546  (1,012) (12)%
Asset impairments132,283  —  132,283  100 %
Total operating expenses$157,310  $37,727  $119,583  317 %
Other expenses, net
Interest expense, net$20,637  $26,630  $(5,993) (23)%
Loss on extinguishment of debt—  29,282  (29,282) (100)%
Total other expenses, net$20,637  $55,912  $(35,275) (63)%

Total operating expenses increased $119.6 million primarily due to the following:
Asset impairments increased $132.3 million due to weakened coal markets that resulted in termination of certain coal leases, changes to lessee mine plans resulting in permanent moves off certain of our coal properties and decreased oil and gas drilling activity which negatively impacted the outlook for NRP's frac sand properties.
Operating and maintenance expenses decreased $7.4 million primarily due to a decrease in bad debt expense in addition to lower royalty fees related to an overriding royalty agreement with Western Pocahontas Properties Limited Partnership ("WPPLP"). The coal royalty expense NRP pays to WPPLP is fully offset by the coal royalty revenue NRP receives from this property.
Depreciation, depletion and amortization expense decreased $4.3 million primarily due to lower coal sales volumes at certain properties.
Total other expenses, net decreased $35.3 million primarily due to the following:
Loss on extinguishment of debt of $29.3 million in 2019 related to the 105.25% premium paid to redeem the 2022 Senior Notes in the second quarter of 2019 as well as the write-off of unamortized debt issuance costs and debt discount related to the 2022 Senior Notes.
Interest expense, net decreased $6.0 million primarily due to lower debt balances during the first six months of 2020 as a result of debt repayments made over the past twelve months.

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Adjusted EBITDA (Non-GAAP Financial Measure)
The following table reconciles net income (loss) from continuing operations (the most comparable GAAP financial measure) to Adjusted EBITDA by business segment:
Operating Segments
For the Six Months Ended (In thousands)Coal Royalty and OtherSoda AshCorporate and FinancingTotal
June 30, 2020
Net income (loss) from continuing operations$(81,735) $3,169  $(28,156) $(106,722) 
Less: equity earnings from unconsolidated investment—  (3,214) —  (3,214) 
Add: total distributions from unconsolidated investment—  14,210  —  14,210  
Add: interest expense, net15  —  20,622  20,637  
Add: depreciation, depletion and amortization4,074  —  —  4,074  
Add: asset impairments132,283  —  —  132,283  
Adjusted EBITDA$54,637  $14,165  $(7,534) $61,268  
June 30, 2019
Net income (loss) from continuing operations$96,314  $23,015  $(64,458) $54,871  
Less: equity earnings from unconsolidated investment—  (23,015) —  (23,015) 
Add: total distributions from unconsolidated investment—  19,110  —  19,110  
Add: interest expense, net—  —  26,630  26,630  
Add: loss on extinguishment of debt—  —  29,282  29,282  
Add: depreciation, depletion and amortization8,362  —  —  8,362  
Adjusted EBITDA$104,676  $19,110  $(8,546) $115,240  

Adjusted EBITDA decreased $54.0 million primarily due to the following:
Coal Royalty and Other Segment
Adjusted EBITDA decreased $50.0 million primarily as a result of weakened coal markets in the first six months of 2020.
Soda Ash Segment
Adjusted EBITDA decreased $4.9 million as a result of lower cash distributions received from Ciner Wyoming in the first six months of 2020.

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Distributable Cash Flow ("DCF") and Free Cash Flow ("FCF") (Non-GAAP Financial Measures)
The following table presents the three major categories of the statement of cash flows by business segment:
Operating Segments
For the Six Months Ended (In thousands)Coal Royalty and OtherSoda AshCorporate and FinancingTotal
June 30, 2020
Cash flow provided by (used in) continuing operations
Operating activities$62,509  $14,166  $(26,585) $50,090  
Investing activities637  —  —  637  
Financing activities—  —  (38,164) (38,164) 
June 30, 2019
Cash flow provided by (used in) continuing operations
Operating activities$98,727  $19,110  $(41,646) $76,191  
Investing activities1,395  —  —  1,395  
Financing activities—  —  (197,841) (197,841) 

The following table reconciles net cash provided by (used in) operating activities of continuing operations (the most comparable GAAP financial measure) by business segment to DCF and FCF:
Operating Segments
For the Six Months Ended (In thousands)Coal Royalty and OtherSoda AshCorporate and FinancingTotal
June 30, 2020
Net cash provided by (used in) operating activities of continuing operations$62,509  $14,166  $(26,585) $50,090  
Add: proceeds from asset sales and disposals507  —  —  507  
Add: proceeds from sale of discontinued operations—  —  —  (66) 
Add: return of long-term contract receivable1,130  —  —  1,130  
Distributable cash flow$64,146  $14,166  $(26,585) $51,661  
Less: proceeds from asset sales and disposals (507) —  —  (507) 
Less: proceeds from sale of discontinued operations —  —  —  66  
Less: acquisition costs(1,000) —  —  (1,000) 
Free cash flow$62,639  $14,166  $(26,585) $50,220  
June 30, 2019
Net cash provided by (used in) operating activities of continuing operations$98,727  $19,110  $(41,646) $76,191  
Add: proceeds from asset sales and disposals503  —  —  503  
Add: proceeds from sale of discontinued operations—  —  —  (434) 
Add: return of long-term contract receivable 892  —  —  892  
Distributable cash flow$100,122  $19,110  $(41,646) $77,152  
Less: proceeds from asset sales and disposals(503) —  —  (503) 
Less: proceeds from sale of discontinued operations—  —  —  434  
Free cash flow$99,619  $19,110  $(41,646) $77,083  

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DCF and FCF decreased $25.5 million and $26.9 million, respectively, primarily due to the following:
Coal Royalty and Other Segment
DCF and FCF decreased $36.0 million and $37.0 million, respectively, primarily as a result of the weakened coal markets in the first six months of 2020.
Soda Ash Segment
DCF and FCF decreased $4.9 million as a result of lower cash distributions received from Ciner Wyoming in the first six months of 2020.
Corporate and Financing Segment
DCF and FCF increased $15.1 million primarily due to lower cash paid for interest as a result of less outstanding debt in the first six months of 2020.
Liquidity and Capital Resources
Current Liquidity
As of June 30, 2020, we had total liquidity of $210.8 million, consisting of $110.8 million of cash and cash equivalents and $100.0 million of borrowing capacity under our Opco Credit Facility.
Cash Flows
Cash flows provided by operating activities decreased $24.8 million, from $76.5 million in the six months ended June 30, 2019 to $51.8 million in the six months ended June 30, 2020 primarily related to lower operating cash flow as a result of the weakened coal markets in addition to lower cash distributions received from Ciner Wyoming in the first six months of 2020, partially offset by less cash paid for interest in the first six months of 2020 due to less debt outstanding.
Cash flows used in financing activities decreased $158.0 million, from $197.8 million in the six months ended June 30, 2019 to $39.8 million in the six months ended June 30, 2020 primarily due to the following:
$345.6 million used for the redemption of our 2022 Senior Notes in the second quarter of 2019;
The $49.3 million pre-payment in the first quarter of 2019 related to the sale of our construction aggregates business;
$26.2 million in debt issuance costs and other in 2019 primarily related to 2019 debt refinancings; and
$16.1 million in lower cash distributions in the first six months of 2020 as a result of the special common unit distribution paid in 2019 and suspending the common unit distribution in the second quarter of 2020.
These decreases in cash flows used were partially offset by:
$300 million provided by the issuance of the 2025 Senior Notes in the second quarter of 2019.
Capital Resources and Obligations
Debt, Net
We had the following debt outstanding as of June 30, 2020 and December 31, 2019:
June 30,December 31,
(In thousands)20202019
Current portion of long-term debt, net$45,786  $45,776  
Long-term debt, net452,101  470,422  
Total debt, net$497,887  $516,198  
We have been and continue to be in compliance with the terms of the financial covenants contained in our debt agreements. For additional information regarding our debt and the agreements governing our debt, including the covenants contained therein, see Note 8. Debt, Net to the Consolidated Financial Statements included elsewhere in this Quarterly Report on Form 10-Q.
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Off-Balance Sheet Transactions
We do not have any off-balance sheet arrangements with unconsolidated entities or related parties and accordingly, there are no off-balance sheet risks to our liquidity and capital resources from unconsolidated entities.

Related Party Transactions
The information required set forth under Note 10. Related Party Transactions to the Consolidated Financial Statements is incorporated herein by reference.

Summary of Critical Accounting Estimates
The preparation of consolidated financial statements in conformity with generally accepted accounting principles in the United States of America requires management to make certain estimates and assumptions that affect the amounts reported in the Consolidated Financial Statements and the accompanying notes. There have been no significant changes to our critical accounting estimates from those disclosed in our Annual Report on Form 10-K for the year ended December 31, 2019.
Recent Accounting Standards
The information set forth under Note 1. Basis of Presentation to the Consolidated Financial Statements is incorporated herein by reference.

ITEM 3. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK
We are exposed to market risk, which includes adverse changes in commodity prices and interest rates as discussed below:
Commodity Price Risk
Our revenues, operating results, financial condition and ability to borrow funds or obtain additional capital depend substantially on prevailing commodity prices. Historically, coal prices have been volatile, with prices fluctuating widely, and they are likely to continue to be volatile. Depressed prices in the future would have a negative impact on our future financial results. In particular, substantially lower prices would significantly reduce revenues and could potentially trigger an impairment of our coal properties or a violation of certain financial debt covenants. Because substantially all of our reserves are coal, changes in coal prices have a more significant impact on our financial results.
We are dependent upon the effective marketing of the coal mined by our lessees. Our lessees sell the coal under various long-term and short-term contracts as well as on the spot market. Current conditions in the coal industry may make it difficult for our lessees to extend existing contracts or enter into supply contracts with terms of one year or more. Our lessees’ failure to negotiate long-term contracts could adversely affect the stability and profitability of our lessees’ operations and adversely affect our future financial results. If more coal is sold on the spot market, coal royalty revenues may become more volatile due to fluctuations in spot coal prices. The market price of soda ash and energy costs directly affects the profitability of Ciner Wyoming’s operations. If the market price for soda ash declines, Ciner Wyoming’s sales revenues will decrease. Historically, the global market and, to a lesser extent, the domestic market for soda ash have been volatile and are likely to remain volatile in the future.
The uncertainty that exists with respect to the economic impact of the global COVID-19 pandemic has introduced significant volatility in the financial markets subsequent to our quarter ended June 30, 2020. The impacts of such volatility on the Partnership cannot be predicted with confidence or reasonably estimated at this time.
Interest Rate Risk
Our exposure to changes in interest rates results from our borrowings under the Opco Credit Facility, which is subject to variable interest rates based upon LIBOR. At June 30, 2020, we did not have any borrowings outstanding under the Opco Credit Facility.
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ITEM 4. CONTROLS AND PROCEDURES
Evaluation of Disclosure Controls and Procedures
NRP carried out an evaluation of the effectiveness of the design and operation of its disclosure controls and procedures (as defined in Rules 13a-15(e) and 15d-15(e) of the Securities Exchange Act of 1934, as amended (the “Exchange Act”)) as of the end of the period covered by this report. This evaluation was performed under the supervision and with the participation of NRP management, including the Chief Executive Officer and Chief Financial Officer of the general partner of the general partner of NRP. Based upon that evaluation, the Chief Executive Officer and Chief Financial Officer concluded that these disclosure controls and procedures are effective in providing reasonable assurance that (a) the information required to be disclosed by us in the reports that we file or submit under the Exchange Act is recorded, processed, summarized and reported within the time periods specified in the Securities and Exchange Commission’s rules and forms, and (b) such information is accumulated and communicated to our management, including our CEO and CFO, as appropriate to allow timely decisions regarding required disclosure.
Changes in the Partnership’s Internal Control Over Financial Reporting
There were no material changes in the Partnership’s internal control over financial reporting during the first six months of 2020 that materially affected, or were reasonably likely to materially affect, the Partnership’s internal control over financial reporting.


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PART II
ITEM 1. LEGAL PROCEEDINGS
From time to time, we are involved in various legal proceedings arising in the ordinary course of business. While the ultimate results of these proceedings cannot be predicted with certainty, we believe these ordinary course matters will not have a material effect on our financial position, liquidity or operations.
ITEM 1A. RISK FACTORS
During the period covered by this report, there were no material changes from the risk factors previously disclosed in Natural Resource Partners L.P.’s Annual Report on Form 10-K for the year ended December 31, 2019 and Quarterly Report on Form 10-Q for the quarter ended March 31, 2020.
ITEM 2. UNREGISTERED SALES OF EQUITY SECURITIES AND USE OF PROCEEDS
None.

ITEM 3. DEFAULTS UPON SENIOR SECURITIES
None. 

ITEM 4. MINE SAFETY DISCLOSURES
None.

ITEM 5. OTHER INFORMATION
None.
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ITEM 6. EXHIBITS
Exhibit
Number
 Description
Purchase and Sale Agreement dated as of November 16, 2018, by and between NRP (Operating) LLC and VantaCore Intermediate Holdings LLC (incorporated by reference to Exhibit 2.1 to Current Report on Form 8-K filed on November 20, 2018).
Fifth Amended and Restated Agreement of Limited Partnership of Natural Resource Partners L.P., dated as of March 2, 2017 (incorporated by reference to Exhibit 3.1 to Current Report on Form 8-K filed on March 6, 2017).
 Fifth Amended and Restated Agreement of Limited Partnership of NRP (GP) LP, dated as of December 16, 2011 (incorporated by reference to Exhibit 3.1 to Current Report on Form 8-K filed on December 16, 2011).
 Fifth Amended and Restated Limited Liability Company Agreement of GP Natural Resource Partners LLC, dated as of October 31, 2013 (incorporated by reference to Exhibit 3.1 to Current Report on Form 8-K filed on October 31, 2013).
 Certificate of Limited Partnership of Natural Resource Partners L.P. (incorporated by reference to Exhibit 3.1 to the Registration Statement on Form S-1 filed April 19, 2002, File No. 333-86582).
Master Amendment and Supplement to Coal Mining and Transportation Lease Agreements and Parent Guaranty dated June 30, 2020 by and among NRP (Operating) LLC, WPP LLC, Hod LLC, Independence Land Company, LLC, Williamson Transport LLC, Foresight Energy LP, Foresight Energy GP LLC, Foresight Energy LLC, Macoupin Energy, LLC, Williamson Energy, LLC, Sugar Camp Energy, LLC, Hillsboro Energy LLC, Foresight Energy Resources LLC, and Foresight Energy Operating LLC (incorporated by reference to Exhibit 10.1 to Current Report on Form 8-K filed on July 1, 2020).
Certification of Chief Executive Officer pursuant to Section 302 of Sarbanes-Oxley.
Certification of Chief Financial Officer pursuant to Section 302 of Sarbanes-Oxley.
Certification of Chief Executive Officer pursuant to 18 U.S.C. § 1350.
Certification of Chief Financial Officer pursuant to 18 U.S.C. § 1350.
101.INS*Inline XBRL Instance Document
101.SCH*Inline XBRL Taxonomy Extension Schema Document
101.CAL*Inline XBRL Taxonomy Extension Calculation Linkbase Document
101.DEF*Inline XBRL Taxonomy Extension Definition Linkbase Document
101.LAB*Inline XBRL Taxonomy Extension Labels Linkbase Document
101.PRE*Inline XBRL Taxonomy Extension Presentation Linkbase Document
104*Cover Page Interactive Data File (formatted as inline XBRL with applicable taxonomy extension information contained in Exhibits 101)
*Filed herewith
**Furnished herewith



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SIGNATURES
Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned and thereunto duly authorized.
NATURAL RESOURCE PARTNERS L.P.
By:NRP (GP) LP, its general partner
By:GP NATURAL RESOURCE
PARTNERS LLC, its general partner
Date: August 7, 2020
By: /s/     CORBIN J. ROBERTSON, JR.
 Corbin J. Robertson, Jr.
 Chairman of the Board and
 Chief Executive Officer
 (Principal Executive Officer)
Date: August 7, 2020
By: /s/     CHRISTOPHER J. ZOLAS
 Christopher J. Zolas
 Chief Financial Officer and Treasurer
 (Principal Financial and Accounting Officer)


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