8131-01 Machine Operator, Paint-Mixing 8131-04 Machine Operator, Chemical Processes Pulverising 8131-05 Roll-Mill Operator, Chemical Processes 8131-06 Crushing Operator, Chemical Processes 8131-07 Match Compounder, Chemical Processes 8131-08 Heat-Treating Plant Operator, Chemical Processes 8131-09 Dry Operator, Chemical Processes 8131-10 Cooking Equipment Operator, Chemical Processes 8131-12 Retort Operator, Chemical Processes 8131-13 Spray-Dried Operator, Chemical Processes 8131-14 Kiln-Operator, Chemical Processes 8131-15 Cement Furnaceman 8131-17 Cooker, Chemical Processes 8131-18 Press-Operator, Chemical Processes Filter 8131-19 Sieving Machine Operator, Chemical Processes 8131-20 Separator Operator, Chemical Processes 8131-21 Crude Oil Treating Equipment Operator 8131-22 Rotary Drum Filterer 8131-23 Acid Plant Operator 8131-24 Fertilizer Plant Operator 8131-25 Bleach Operator, Chemical 8131-26 Vacuum Pan Chemical Operator (Except Petroleum and Natural Gas) 8131-27 Operator, Coverter Chemical Processes (Except Petroleum and Natural Gas) 8131-28 Evaporator Operator 8131-29 Operator, Still Batch (Chemical Processes Except Petroleum and Natural Gas) 8131-30 Operator, Still Chemical Processes 8131-31 Operator, Still Continuous (Chemical Processes Except Petroleum and Natural Gas) 8131-32 Operator, Still Turpentine 8131-33 Kiln-Operator, Charcoal 8131-34 Sulphur Burner 8131-35 Foam Maker, Chemical 8131-36 Yarn Maker, Synthetic 8131-37 Reactor-Convertor (Chemical Processes) 8131-38 Enameller, Chemical 8131-41 Machine Operator, Coke Production 8131-45 Machine Operator, Washing Chemical and Related Material