File:1982 Census of Mineral Industries. Industry Series. Copper Ores, Lead and Zinc Ores, Gold Ores, and Silver Ores (IA 1982censusofmi8210210uns).pdf
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![File:1982 Census of Mineral Industries. Industry Series. Copper Ores, Lead and Zinc Ores, Gold Ores, and Silver Ores (IA 1982censusofmi8210210uns).pdf](https://upload.wikimedia.org/wikipedia/commons/thumb/8/85/1982_Census_of_Mineral_Industries._Industry_Series._Copper_Ores%2C_Lead_and_Zinc_Ores%2C_Gold_Ores%2C_and_Silver_Ores_%28IA_1982censusofmi8210210uns%29.pdf/page1-453px-1982_Census_of_Mineral_Industries._Industry_Series._Copper_Ores%2C_Lead_and_Zinc_Ores%2C_Gold_Ores%2C_and_Silver_Ores_%28IA_1982censusofmi8210210uns%29.pdf.jpg?20200619231822)
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