Dolly Ann Craig

CNX Gas PA LLC develops and produces natural gas. The company was founded in June 2005 and is headquartered in Canonsburg, PA.

Society of Petroleum Engineers, Inc. provides petroleum engineering services. The non-profit company is based in Allen, TX and has subsidiaries in United States, India and Canada.

Samson Oil & Gas Ltd. engages in the exploration, development, and production of crude oil, natural gas, and natural gas liquids. Its projects include Rainbow Field, Hawk Springs, and Foreman Butte. The company was founded on April 6, 1979 and is headquartered in Melbourne, Australia.

American Institute of Mining, Metallurgical & Petroleum Engineers operates as an engineering society. The company was founded in 1871 and is headquartered in Englewood, CO.

Atlas Energy LP develops and provides natural gas and oil. The company was founded on December 15, 2005 and is headquartered in Pittsburgh, PA.

Atlas Resource Partners LP is an exploration and production master limited partnership. It develops and produces natural gas, crude oil and natural gas liquids, with operations in basins across the United States. The company also sponsors and manages tax-advantaged investment partnerships, in which it co-invests, to finance a portion of natural gas and oil production activities. It also operates its business through following segments: Oil & Gas production, Well construction & completion and Other partnership management. Atlas Resource Partners was founded in October 2011 and is headquartered in Pittsburgh, PA.