BP oil spill

Associated Press
FILE - In this Tuesday, Feb. 1, 2011 file picture, BP PLC's CEO Bob Dudley pauses during a results media conference at their headquarters in London. BP is not fully past the Deepwater Horizon disaster, the 2010 explosion that killed 11 workers and led to the largest oil spill in U.S. history. The company has so far set aside $42 billion to pay fines and damages resulting from the spill, and that amount may yet grow. Paying for the spill has forced BP to change. Under Bob Dudley, who became CEO in October 2010, BP has been selling smaller assets while holding onto promising large resources that it hopes to exploit with its expertise in developing large projects. (AP Photo/Alastair Grant)

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When a BP oil well began gushing crude into the Gulf of Mexico four years ago, fisherman George Barisich used his boat to help clean up the millions of gallons that spewed in what would become the worst offshore spill in U.S. history.

Like so many Gulf Coast residents who pitched in after the April 20, 2010, explosion of the Deepwater Horizon rig, Barisich was motivated by a desire to help and a need to make money — the oil had destroyed his livelihood.

Some 33,000 people, including Barisich, are participating in a massive federal study that aims to determine any short or possible long-term health effects related to the spill. (AP)

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