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Books by Bruce I. Thomas

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Placer mining in Alaska: Methods and costs at operations using hydraulic and mechanical excavation equipment with nonfloating washing plants
🇺🇸 United States
Placer mining in Alaska: Methods and costs at operations us…
By: Bruce I. Thomas
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Gold-lode deposits, Fairbanks Mining District, Central Alaska
🇺🇸 United States
Gold-lode deposits, Fairbanks Mining District, Central Alas…
By: Bruce I. Thomas
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