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When did the Deepwater Horizon oil rig explode in the Gulf of Mexico?
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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 Deepwater Horizon oil rig suffered a catastrophic explosion on April 20, 2010, in the Gulf of Mexico. The rig subsequently sank two days later, on April 22, 2010. This event resulted in the largest marine oil spill in history.12