Atlas Energy Resouces LLC (ATN) is a natural gas and oil producer in the Appalachain Basin.

Atlas Energy is a subsidary or Atlas America Inc. (ATLS).

http://stockcharts.com/h-sc/ui?s=atn

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In the business world, everyone is paid in two coins: cash and experience. Take the experience first; the cash will come later.
- Harold S. Geneen