Back on this day in 1989, an Exxon supertanker crashed, causing one of the worst oil spills in U.S. history.

Back on this day in 1989, an Exon supertanker crashed, causing one of the worst oil spills in U.S. history. The Exxon Valdez crashed into a reef in Southern Alaska, dumping an estimated 11 million gallons of oil into the water.

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