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  1. By: United States. Bureau of Land Management. Portland Service Center.
    Publication info: Portland, Or, U.S. Department of the Interior, Bureau of Land Management, Portland Service Center, 1969
    Holding Institution: Bureau of Land Management
    Subjects: Analysis  Bureau of Land Management  Cost of operation  Costs  Milling  Mills and mill-work  Mines and mineral resources  Ores  Records and correspondence  United States