Richard A. Boone

Horizon Natural Resources Co., formerly AEI Resources, operates and markets coal. The company has 42 mines in Kentucky, West Virginia, Tennessee, Indiana, Illinois and Colorado

Rhino Resource Partners LP is a diversified coal producing limited partnership company, which focuses on coal and energy related assets and activities. It produces, processes and sells high quality coal of various steam and metallurgical grades from multiple coal producing basins in the U.S. It operates through the following four segments: Central Appalachia, Northern Appalachia, Rhino Western, and Illinois Basin. The Central Appalachia segment consists of Tug River and Rob Fork mining complexes. The Northern Appalachia segment comprises Hopedale mining complex, Sands Hill mining complex, and Leesville field. The Rhino Western segment includes the underground mine in the Western Bituminous region. The Illinois Basin segment covers the underground mine, preparation plant, and river loadout facility, a well as Taylorville field reserves. The company was founded on January 11, 2006 and is headquartered in Lexington, KY.

PinnOak Resources LLC produces and supplies metallurgical and steam coal and coal bed methane. It operates coal complexes in Pineville, West Virginia and Oak Grove, Alabama. The company is headquartered in Canonsburg, PA

Rhino GP LLC owns and operates coal reserves. The company is headquartered in Greenwich, CT.

Rhino Resources, Inc. (Kentucky) operates coal properties and related assets. It is headquartered in Lexington, KY.

Jewell Valley Mining LLC engages in coal mining services. The company is headquartered in Lexington, KY.

Rhino Energy LLC engages in the manufacture of sulfur steam coal for electric utilities. It also offers metallurgical coal that is used in the manufacture of steel. The company was founded on August 7, 2007 and is headquartered in Lexington, KY.