Shoshanna Utchenik

The U.S. government has estimated that about 4.1 million barrels of oil spilled into the Gulf of Mexico by BP in 2010 were never cleaned up.

Now the Justice Department is investigating whether BP execs lied to Congress about the total amount of oil leaked, reported the Wall Street Journal on Monday.

The accidental explosion of the Deepwater Horizon drilling rig killed 11 workers and ruptured the Macondo well. It took months to successfully cap the well as engineers scrambled desperately to contain the powerful force of spewing oil.

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