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  1. Placer mining in the western United States. Pt. I, General information, hand shoveling, and ground sluicing /
    Placer mining in the western United States
    Pt I General information hand shoveling and ground sluicing
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  2. Placer mining in the western United States. Pt. 2, Hydraulicking, treatment of placer concentrates, and marketing of gold /
    Placer mining in the western United States
    Pt 2 Hydraulicking treatment of placer concentrates and marketing of gold
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