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2911-01 Oil Refiners
2911-02 Oils Re-Refined
2911-03 Fuel Manufacturers
2911-04 Oils Petroleum Manufacturers
2911-05 Petroleum Products Manufacturers
2911-06 Automobile Oil Refiners Manufacturers
2911-98 Petroleum Refining
2951-01 Asphalt & Asphalt Products Mfrs
2951-98 Asphalt Paving Mixtures & Blocks
2952-01 Roofing Materials Mfrs
2952-98 Asphalt Felts & Coatings
2992-01 Gasoline Additives Manufacturers
2992-98 Lubricating Oils & Greases
2999-99 Products of Petroleum & Coal Nec