This major group includes establishments primarily engaged in petroleum refining, manufacturing paving and roofing materials, and compounding lubricating oils and greases from purchased materials. Establishments manufacturing and distributing gas to consumers are classified in public utilities industries, and those primarily engaged in producing coke and by-products are classified in Major Group 33.
Industry Group 291: Petroleum Refining
·2911 Petroleum Refining
Industry Group 295: Asphalt Paving And Roofing Materials
·2951 Asphalt Paving Mixtures and Blocks
·2952 Asphalt Felts and Coatings
Industry Group 299: Miscellaneous Products Of Petroleum And Coal
·2992 Lubricating Oils and Greases
·2999 Products of Petroleum and Coal, Not Elsewhere Classified

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