This discounted mining package includes certificates from The Anaconda Company, East Alabama Mining, Calumet & Hecla, Cobalt Gold Mining Company, Copper King Mining and Smelting Company, Golden Cycle Mining and Reduction Company, Goldfield Consolidated Mines, Grand Central Mining Company, Consolidated Coppermines Corporation , the Phelps Dodge Corporation. This is a terrific set you won't want to miss!