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Atlas Energy Resources is a Philadelphia, PA-based company in the Energy and Utilities sector.
Northern Oil and Gas, Inc. (NYSE: NOG) is a company with a primary strategy of investing in non-operated minority working and mineral interests in oil & gas properties, with a core area of focus in the premier basins within the United States. Northern is the largest publicly traded non-operated exploration and production company.
Integra Technologies Limited is a Sarnia, ON-based company in the Energy and Utilities sector.
Patterson Drilling Co is a Lumberton, MS-based company in the Energy and Utilities sector.
Petróleo Brasileiro S.A. é uma empresa de capital aberto, cujo acionista majoritário é o Governo do Brasil, sendo, portanto, uma empresa estatal de economia mista.