 HOUSTON--BUSINESS WIRE--Natural Resource Partners L.P. NYSE:NRP today reported first quarter 2021 results as follows: For the Three Months Ended Last Twelve Months March 31, March 31, In thousands Unaudited 2021 2020 2021 Net income loss 8,381 18,779 95,217 Asset impairments 4,043 139,928 Net income excluding asset impairments 1 12,424 18,779 44,711 Adjusted EBITDA 1 29,436 31,932 