HOUSTON–(BUSINESS WIRE)–Natural Resource Partners L.P. (NYSE:NRP) today reported fourth quarter and full year 2023 results as follows:     For the Three Months Ended     For the Year Ended   (In thousands) (Unaudited)   December 31, 2023   Net income   $ 64,980     $ 278,435   Operating cash flow   $ 77,786     $ 310,978   Free cash flow (1)   $ 78,419     $ 313,431     (1) See “Non-GAAP Financial Measures” and reconciliation tables at the end of this release. 2023 Highlights: Generated record