Foresight Energy LP engages in the development, mining, production, marketing, transportation, and sale of thermal coal primarily in the eastern United States and internationally. As of March 10, 2020, the company operated four longwall mining complexes consisting three longwall mining systems in Williamson, Sugar Camp, and Hillsboro; one continuous mining operation in Macoupin; and the Sitran terminal on the Ohio River. It controls approximately 2.1 billion tons of coal reserves in the Illinois Basin. The company sells its coal to electric utility and industrial companies. Foresight Energy GP LLC acts as a general partner for Foresight Energy LP. The company was formerly known as Foresight Energy Partners LP and changed its name to Foresight Energy LP in April 2014. Foresight Energy LP was founded in 2006 and is based in Saint Louis, Missouri. Foresight Energy LP operates as a subsidiary of Murray Energy Corporation.