Supervises and coordinates activities of workers engaged in extracting alumina from bauxite: Calculates feed rates of raw materials, using f...
Tends equipment that separates gold or silver from ground ore by mercury amalgamation process, using either of following methods: 1 Turns ...
Rebuilds anodes of aluminum-reduction furnace, performing any combination of following duties: Removes straps flexible connectors from bot...
Supervises and coordinates activities of workers engaged in rebuilding and repairing anodes and cathodes of aluminum-reduction pots. Trains ...
Removes pot crust and carbon from spent anode assemblies, and cast-iron thimbles from contact rods, using crushing press, handtools, and pow...
Cleans flannel blankets over which mixture of finely ground gold ore and cyanide solution from grinding mills is passed to collect free part...
Supervises and coordinates activities of workers engaged in controlling blast furnaces to smelt concentrates of lead ore preparatory to refi...
Empties slurry from precipitator tanks as directed by Top-Precipitator Operator : Starts and stops pumps to transfer slurry to thickener t...
Tends equipment to dry, mix, and compress copper fines into briquettes for use by smelter: Starts belt conveyors that automatically feed mix...
Operates press that forms carbon paste into anodes used in metal-reduction pots: Pushes panel buttons to activate hopper, chain conveyor, co...
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