Sigmund J. Rosenfeld

The Group's principal activities are provides acquisition, exploitation, development and production of natural gas and oil and it also provide gas gathering, processing and compression services for properties. The Group operates as two business segments through two wholly-owned subsidiaries, PRB Oil and Gas Inc a Colorado corporation, a gas and oil exploitation and it include developing and producing natural gas from CBM wells and PRB Gathering Inc a Colorado corporation, a Gas Gathering and Processing and it provide owns and operates gas gathering and processing systems. The Group operates in Wyoming, Colorado and Nebraska.

Shell Oil Co. manufactures petrochemicals and distributes gas and oil products. The company was founded in 1912 and is headquartered in Houston, TX.

Wolf Landscape Co. provides telecommunications site construction services. Its services include antenna and line installation, general contracting, tower and site maintenance, management services, microwave communications and backhaul. The company was founded in 1994 and is headquartered in Marriottsville, MD.

Part of ConocoPhillips, Inexco Oil Co. is a company that produces crude oil. The company is based in Houston, TX.

Gulf Coast Ventures, Inc. operates shopping centers with a broad range of items including sunglasses, body jewelry, and toys. The company was founded on October 19, 2001 and is headquartered in Houston, TX.

Black Raven Energy, Inc. engages in the acquisition, exploitation, development and production of natural gas and oil. It also provides gas gathering, processing and compression services for properties The company was founded in December 2003 and is headquartered in Lakewood, CO.