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CREDO Petroleum Corporation
  303.297.2200      1801 Broadway Suite 900, Denver, Colorado 80202 Detail
An independent exploration and production company focused on adding oil and gas reserves through the drill bit and through the application of the company's patented fluid lift Technology known as the Calliope Gas Recovery SystemTM.

Ensign United States Drilling Inc. Provides equipment and services for drilling of oil and gas wells on either a footage, day-work, turnkey or integrated service basis.

Forest Oil Corporation
  303.812.1400      707 � 17th Street, Suite 3600, Denver, Colorado 80202 Detail
Forest Oil and its subsidiaries are engaged in the exploration, acquisition, development, production and marketing of natural gas and crude oil in North America and in selected international locations.

SM Energy Company
  (303) 861-8140      1775 Sherman St Suite 1200, Denver, Colorado 80203 Detail
An independent energy company focused on the exploration, exploitation, development, acquisition, and production of natural gas and crude oil in the United States.

WhitMar Exploration
  303-991-9400      555 17th St. Suite 880, Denver, Colorado 80202 Detail
Actively engaged in the drilling and development of natural gas and oil prospects in the continental United States, with primary focus on shale gas plays in the Appalachian Basin and Mid-Continent regions.