Rhino Resource Partners LP, together with its subsidiaries, produces, processes, and sells various grades of steam and metallurgical coal from surface and underground mines in the United States. It operates mines in Kentucky, Ohio, West Virginia, and Utah. The company markets its steam coal primarily to electric utility companies as fuel for their steam powered generators; and metallurgical coal primarily to steel and coke producers. As of December 31, 2018, it controlled an estimated 268.5 million tons of proven and probable coal reserves, consisting of an estimated 214.0 million tons of steam coal and an estimated 54.5 million tons of metallurgical coal; and 164.1 million tons of non-reserve coal deposits. Rhino GP LLC operates as a general partner of the company. The company was founded in 2003 and is based in Lexington, Kentucky. On July 22, 2020, Rhino Resource Partners LP filed a voluntary petition for reorganization under Chapter 11 in the U.S. Bankruptcy Court for the Southern District of Ohio. The plan was later approved as Chapter 11 liquidation on January 15, 2021. It is in joint administration with Hopedale Mining LLC.