Natural Resource Partners LP announced unaudited consolidated earnings and production results for the first quarter ended March 31, 2013. For the quarter, the company reported revenues of $94.3 million against $91.9 million a year ago. Net income attributable to the company was $46.9 million or $0.43 per basic and diluted share compared to $50.3 million or $0.47 per basic and diluted share for the first quarter of 2012. Net cash provided by operating activities was $43.9 million against $49.5 million a year ago. Distributable cash flow of $44.5 million, a 10% decrease from first quarter of 2012. Income from operations was $62.5 million against $64.8 million a year ago. For the quarter, the company reported coal production of 13.8 million tons against 12.1 million tons a year ago. For the quarter, the company reported asset impairment of $0.3 million.

Natural Resource Partners L.P. announced that the Board of Directors of its general partner has declared a first quarter 2013 distribution of $0.55 per unit for NRP. The distribution will be paid on May 14, 2013 to unit holders of record on May 6, 2013.

Natural Resource Partners LP reported unaudited consolidated earnings and production results for the fourth quarter and full year ended December 31, 2012. For the quarter, the company reported total revenues of $102,436,000 against $93,135,000 a year ago. Income from operations was $73,206,000 against loss from operations of $2,600,000 a year ago. Net income was $60,107,000 against net loss of $16,903,000 a year ago. Net loss attributable to the limited partners was $58,905,000 or $0.56 per basic and diluted share against net loss attributable to the limited partners of $16,565,000 or $0.16 per basic and diluted share a year ago. Net cash provided by operating activities was $77,536,000 against $87,252,000 a year ago. Acquisition of land, coal and other mineral rights was $46,071,000 against $12,675,000 a year ago. Before considering the non-cash impairments, net income would have been $0.58 per unit for 2012, up 18% from the $0.49 per unit recorded for the fourth quarter 2011. Distributable cash flow declined $5.0 million over the fourth quarter of 2011 to $74.5 million for the fourth quarter of 2012 due to increased reserves for future principal payments. For the full year, the company's total revenues were $379,147,000 against $377,683,000 a year ago. Income from operations was $267,165,000 against $104,135,000 a year ago. Net income was $213,355,000 against $54,026,000 a year ago. Net income attributable to the limited partners was $209,088,000 or $1.97 per basic and diluted share against $52,945,000 or $0.50 per basic and diluted share a year ago. Net cash provided by operating activities was $271,408,000 against $305,574,000 a year ago. Acquisition of land, coal and other mineral rights was $180,534,000 against $120,284,000 a year ago. Before considering non-cash impairments in both 2012 and 2011, net income per unit was $2.00 per unit in 2012 versus $1.99 per unit in 2011. Distributable cash flow decreased 12% from 2011, to $246.7 million for 2012 mainly due to a $21.1 million decrease from increased reserves for future principal payments; a $24.0 million decrease in cash flows due to balance sheet changes; partially offset by, a $9.7 million increase in gains on property sales; and an additional $2.7 million in cash received from the lease of NRP's newly acquired Sugar Camp infrastructure asset that is not included in cash flow from operations. For the quarter, the company reported coal production of 17,012,000 against 12,042,000 for the same period a year ago. Average coal royalty revenue per ton was $3.98 against $5.62 for the same period a year ago. For the year, the company reported coal production of 54,444,000 against 49,151,000 for the same period a year ago. Average coal royalty revenue per ton was $4.79 against $5.68 for the same period a year ago. Metallurgical production accounted for 32% of production and 44% of coal royalty revenues. For the fourth quarter, the company reported asset impairment of $2,568,000. For the year 2013, the company anticipates total revenues in a range of $210 million to $235 million. The company also anticipates distributable cash flow in a range of $250 million to $280 million. The company expects net income per unit to be in a range of $1.60 per unit to $1.80 per unit. For the year 2013, the company expects coal production tonnage to be in the range of 48.0 mm tons to 56.0 mm tons.