The value of the transaction has not been disclosed.
The transaction includes an estimated 40 million tonnes of coal reserves in the West Kentucky No. 9 coal seam and the Onton No. 9 mine located near the city of Sebree.
Alliance Resource Partners president and chief executive officer Joseph W Craft III "The acquisition of Green River provides an attractive addition to ARLP’s existing operations in the growing market for Illinois Basin coal."
The underground mining complex operates three continuous mining units employing room-and-pillar mining techniques.
An air shaft is currently under construction, which would allow the addition of a fourth continuous mining unit, should market conditions warrant increased production from the mine.
Alliance Resource, a diversified producer and marketer of coal to major US utilities and industrial users.