In this Tuesday, April 27,... Pictures

In this Tuesday, April 27, 2010, file photo, an oil rig is seen in the Gulf of Mexico near the Chandeleur Islands, off the Southeastern tip of Louisiana. Energy companies have reoccupied nearly 400 of the production platforms in the Gulf of Mexico that were abandoned in advance of Hurricane Isaac, though oil production remains almost entirely shut down. Oil and gas workers began retaking the offshore sites Friday and federal officials on Saturday, Sept. 1, 2012 say that 377 of the 596 productions platforms have some staffing on them, up from just 97. AP file photo <strong>Gerald Herbert - AP</strong>
In this Tuesday, April 27, 2010, file photo, an oil rig is seen in the Gulf of Mexico near the Chandeleur Islands, off the Southeastern tip of Louisiana. Energy companies have reoccupied nearly 400 of the production platforms in the Gulf of Mexico that were abandoned in advance of Hurricane Isaac, though oil production remains almost entirely shut down. Oil and gas workers began retaking the offshore sites Friday and federal officials on Saturday, Sept. 1, 2012 say that 377 of the 596 productions platforms have some staffing on them, up from just 97. AP file photo Gerald Herbert - AP

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