Oil refinery

File:Anacortes Refinery 31911.JPG
Anacortes Refinery (Tesoro), on the north end of March Point southeast of Anacortes, Washington

An oil refinery or petroleum refinery is an industrial plant where crude oil is made into useful petroleum products by fractional distillation and other processes. Products include gasoline, diesel fuel, asphalt base, heating oil, kerosene, and liquefied petroleum gas.[1][2]

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