DOT Lookup Search Level III DOT Groups Within 54 - OCCUPATIONS IN PROCESSING OF PETROLEUM, COAL, NATURAL AND MANUFACTURED GAS, AND RELATED PRODUCTS Back to DOT Divisions Within 5 540 mixing and blending occupations 541 filtering, straining, and separating occupations 542 distilling, subliming, and carbonizing occupations 543 drying, heating, and melting occupations 544 grinding and crushing occupations 546 reacting occupations, n.e.c. 549 occupations in processing of petroleum, coal, natural and manufactured gas, and related products, n.e.c.

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