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Apex Edmonton is a Calgary, AB-based company in the Energy & Utilities sector.
Mack Energy Corp is a Artesia, NM-based company in the Energy and Utilities sector.
Southwestern Energy (also known as SWN, NYSE: SWN) is an oil and natural gas company based in Houston. Texas. Its primary current activity is, according to the company, "current operations being principally focused on development of the unconventional gas reservoir located on the Arkansas side of the Arkoma Basin"
Wellhead Distributors International is a Houston, TX-based company in the Energy and Utilities sector.
Spencer Oil Company is a Roseville, MI-based company in the Energy and Utilities sector.