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How large was the oil slick created by the Deepwater Horizon spill?
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Deepwater Horizon oil spill
Fireboat response crews attempt to extinguish the blaze aboard the Deepwater Horizon oil rig in the Gulf of Mexico, April 21, 2010.
The oil slick resulting from the Deepwater Horizon disaster extended over more than 57,500 square miles (149,000 square km) of the Gulf of Mexico.1