Colorado Oil and Gas Conservation Commission
http://oil-gas.state.co.us

Wyoming Oil and Gas Conservation Commission
http://wogcc.state.wy.us

Utah Division of Oil, Gas and Mining
http://ogm.utah.gov

Colorado Oil & Gas Association
http://www.coga.org

Independent Petroleum Association of Mountain States
http://www.ipams.org

Bureau of Land Management
http://www.blm.gov/nhp