Processing of ore to produce zinc and its alloys in ingot form, copper concentrates containing gold and silver, molybdenum concentrate, zinc concentrate, copper cake, copper and zinc ores, copper cake, zinc dross fines, and metallic silver and gold doré bars

Processing of ore to produce zinc and its alloys in ingot form, copper concentrates containing gold and silver, molybdenum concentrate, zinc concentrate, copper cake, copper and zinc ores, copper cake, zinc dross fines, and metallic silver and gold doré bars

Providing instructional and training information about the proper use and operation of mining machines and apparatus, mineral processing floatation machinery, solids-liquid separators, mineral separation cyclones, stream samplers, grinding rods and ball mills used in the mining and mineral extraction industry

Processing of refined and partially refined minerals [ and metals ] ; production of zinc

Mining extraction of refined or partially refined minerals and metals

Processing of ore to produce zinc and its alloys in ingot form, copper concentrates containing gold and silver, molybdenum concentrate, zinc concentrate, copper cake, copper and zinc ores, copper cake, zinc dross fines, and metallic silver and gold doré bars

Base metals and their alloys, namely, zinc and its alloys; copper and its alloys; zinc alloy ingot; zinc ores; copper cake; copper ores; zinc ingot

Mining extraction of refined or partially refined minerals and metals

Mining extraction of refined or partially refined minerals and metals

processing of refined and partially refined minerals and metals; treatment of metals, namely, production of pure zinc ores, zinc alloy ingots, copper concentrate ores, cast zinc, copper cake, zinc dross and precious metal slimes

base metals and their alloys, namely, copper cake, pure zinc ores, zinc alloy ingots, copper concentrate ores, cast zinc, and zinc dross