Word: coloradoâ
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Dates: during 1924-1924
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...island in the Arctic to study a project for installing a hydro-electric plant. After many years of this practical mining, he founded a firm of engineers specializing in construction of shafts and mining plants. His four big mining ventures were successful; two in Colorado???"Tomboy" and "Smugglers Union"; and two in California?"Plymouth"and "Mountain...
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