These Are the 5 Largest Oil Refineries in the United States

Four of the world's largest oil refineries are located in Texas.
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Over 30 U.S. states are home to oil refineries with America possessing 4 of the world's largest in Texas alone. 

The oil industry is big business in America, employing thousands of people and producing millions of barrels of petroleum a day across over 140 refineries nationwide.

These are the 5 largest oil refineries in the United States.

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