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  • METHODS OF WORKING COAL AND METAL MINES
    ebook
    METHODS OF WORKING COAL AND METAL MINES
    SETH D. WOODRUFF
    Methods of Working Coal and Metal Mines, Volume 3 discusses the extraction of mineral deposits, which involves the driving of development openings, from the surface or a central shaft, to the “block out” portions of the deposit. This book is divided into three parts. Part A describes the coal mining methods, which include pillar mining systems and long-wall mining. Economics o...

    $1,249.00

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