David A. Hentschel

Cimarex Energy Co. is an independent oil and gas exploration and production company. Its activities include drilling, completing and operating wells. It operates through the following areas: Permian Basin, Mid-Continent, and Others in Oklahoma, Texas and New Mexico. The company was founded by F. H. Merelli in February 2002 and is headquartered in Denver, CO.

Occidental Oil & Gas Holding Corp. explores oil and gas. The company is located in Los Angeles, CA.

CNOOC Petroleum North America ULC is an upstream oil and gas company responsibly developing energy resources in the UK North Sea, offshore West Africa, the United States, and Western Canada. The firm has three principal businesses: conventional oil and gas, oil sans, and gas and oil. The company was founded in 1971 and is headquartered in Calgary, Canada.

Luis Palau Association develops church principles and Christian living style. It proclaims the gospel, mobilize the church and equip the next generation. The company was founded by Luis Palau and is headquartered in Beaverton, OR.

BOKF, NA, do-business-as BOK Financial, is an asset management firm headquartered in Tulsa, Oklahoma. The firm is a subsidiary of BOK Financial Corp. (NASDAQ: BOKF). BOKF offers trust and investment management services through their banks and subsidiary.

Cities Service Co. explores for and produces oil and gas. The company is based in Tulsa, OK. Cities Service was acquired by Occidental Petroleum Corp. on December 31, 1982 for $4,115.60 million.