90501397
Feb 1, 2021
base metals and their alloys, namely, copper concentrates containing gold and silver, zinc concentrate, molybdenum concentrate, zinc dross fines
ChemicalsProcessing 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
Treatment of Materials