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Doyon, Limited, the Native regional corporation for Interior Alaska, is a for-profit corporation with more than 19,800 shareholders. Established under the 1971 Alaska Native Claims Settlement Act (ANCSA), Doyon is the largest private landowner in Alaska, with more than 12.5 million acres allocated to the corporation under ANCSA. Doyons mission is to continually enhance our position as a financially strong Native corporation in order to promote the economic and social well-being of our shareholders and future shareholders, to strengthen our Native way of life, and to protect and enhance our land and resources. As one of the top Alaska-owned businesses, Doyon operates a diverse family of companies, including more than a dozen for-profit businesses across the nation in the areas of oil field services, utility management, engineering management, information technology services, land and natural resource development, facility management, construction and tourism. Headquartered in Fairbanks, Alaska, Doyon is led by a 13-member board of directors and a team of senior managers. The corporation currently employs over 800 individuals worldwide and over 550 employees in Alaska.
Production Enhancement Group, Inc., a Houston-based energy services company incorporated in Alberta, Canada, rades on the TSX under the symbol WIS.
Perfection Oil Co. is a Dubuque, IA-based company in the Energy and Utilities sector.
Bratco Operating Co Inc is a Dewey, OK-based company in the Energy and Utilities sector.
HollyFrontier Corporation, headquartered in Dallas, Texas, is an independent petroleum refiner and marketer that produces high value light products such as gasoline, diesel fuel, jet fuel and other specialty products. HollyFrontier operates through its subsidiaries a 135,000 barrels per stream day ("bpsd") refinery located in El Dorado, Kansas, a 125,000 bpsd refinery in Tulsa, Oklahoma, a 100,000 bpsd refinery located in Artesia, New Mexico, a 52,000 bpsd refinery located in Cheyenne, Wyoming and a 31,000 bpsd refinery in Woods Cross, Utah. HollyFrontier markets its refined products principally in the Southwest U.S., the Rocky Mountains extending into the Pacific Northwest and in other neighboring Plains states.