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1) “Refining costs – The refining of crude oil makes up about 28 percent of the price of gasoline.” Source and further information: http://www.topix.com/…/p4 2) Comparison years 2005 —– 2004 Refining cost ($/bbl) 0.89 0.70 Source: http://www.secinfo.com/d171Yu.zwv.c.
