Dennis F. Coker

Part of Natural Resource Partners LP, GP Natural Resource Partners LLC owns, manages and leases a portfolio of mineral properties which includes coal and soda ash, oil & gas and construction aggregates. The company is based in Houston, TX. Corby J. Robertson has been the CEO of the company since 2002.

Ciner Wyoming LLC produces soda ash. It is an essential raw material used in many applications and industries, including glass, detergents, soaps, chemicals, and building manufacturing. The company was founded in 1996 and is headquartered in Green River, WY.

Part of Heidelberg Materials AG, Hanson Building Materials America, Inc. is a company that sells and mines aggregates. The company is based in Neptune, NJ.

National Stone, Sand & Gravel Association is a non profit organization which advocates for the aggregates industry. It advances public policies that protect and expand the safe, environmentally responsible use of aggregates that build America’s infrastructure and economy. The company is headquartered in Alexandria, VA.