Ellen Warren

Atlas Pipeline Holdings GP LLC provides mid stream energy services. It is engaged in transmission, gathering and processing of natural gas in the mid-continent primarily Oklahoma, Arkansas, Texas and Appalachian. The company is located in Philadelphia, PA.

Atlas Energy LP develops and provides natural gas and oil. The company was founded on December 15, 2005 and is headquartered in Pittsburgh, PA.

OutSource Communications operates as a marketing communications firm that services corporate and nonprofit clients. It offers coaching and planning, contract negotiations, measurement, and internal or external communications. The firm serves the well-funded startups, small businesses, and agencies and consulting firms. The company was founded by Ellen F. Warren in August 2005 and is headquartered in Toronto, Canada.

Atlas Energy Resources LLC drills and explores natural gas and oil in the Appalachian Basin. It has nearly 6,000 wells on about 500,000 acres. The company was founded in 2006 and is headquartered in Moon Township, PA.

Atlas Energy, Inc. operates as an independent natural gas producers in the Appalachian and Michigan Basins. It also develops in the Marcellus Shale in Pennsylvania. The company was founded in September 2000 and is headquartered in Moon Township, PA.

Atlas Energy Group LLC is an energy management company, which engages in the acquisition and development of upstream and midstream oil and gas assets. It operates through the following segments: Atlas Resource Partners, Atlas Growth Partners, and Corporate and Other. The company was founded in October, 2011 and is headquartered in Fort Worth, TX.

Atlas Resource Partners LP is an exploration and production master limited partnership. It develops and produces natural gas, crude oil and natural gas liquids, with operations in basins across the United States. The company also sponsors and manages tax-advantaged investment partnerships, in which it co-invests, to finance a portion of natural gas and oil production activities. It also operates its business through following segments: Oil & Gas production, Well construction & completion and Other partnership management. Atlas Resource Partners was founded in October 2011 and is headquartered in Pittsburgh, PA.