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    Extraction of soluble copper from ores in leaching by percolation

    Published 1931
    “…Mines Bur. Rpt. of Investigation No. 3073.…”
    Government Document Microfilm Book

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  2. 2
    Cover Image

    Extraction of soluble copper from ores in leaching by percolation.

    Published 1931
    “…Mines Bur. Rpt. of Investigation No. 3073.…”
    Full Text (via ProQuest)
    Government Document eBook

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