C10Level 2

PETROLEUM, GAS OR COKE INDUSTRIES

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C10BDESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS

C10CWORKING-UP PITCH, ASPHALT, BITUMEN, TAR

C10FDRYING OR WORKING-UP OF PEAT

C10GCRACKING HYDROCARBON OILS

C10HPRODUCTION OF ACETYLENE BY WET METHODS

C10JPRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES

C10KPURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLE GASES CONTAINING CARBON MONOXIDE

C10LFUELS NOT OTHERWISE PROVIDED FOR

C10MLUBRICATING COMPOSITIONS

C10NINDEXING SCHEME ASSOCIATED WITH SUBCLASS

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