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Society of Petroleum Engineers is a Richardson, TX-based company in the Energy and Utilities sector.
Continental Resources (NYSE: CLR ) is a Top 10 independent oil producer in the United States . Based in Oklahoma City , Continental is the largest leaseholder and producer in the nation's premier oil field, the Bakken play of North Dakota and Montana . The company also has significant positions in Oklahoma , including its recently discovered SCOOP play and the Northwest Cana play. With a focus on the exploration and production of oil, Continental is on a mission to unlock the technology and resources vital to American energy independence. In 2014, the company will celebrate 47 years of operation.
Crosstex Energy, L.P. is a midstream energy company through its subsidiary, Crosstex Energy Services, L.P.
ADA Enterprises Inc is a Northwood, IA-based company in the Energy and Utilities sector.
Birmingham Water Works is a Birmingham, AL-based company in the Energy and Utilities sector.