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  1. 1

    Methods of working coal and metal mines. by Woodruff, Seth D.

    Published 1966
    Book

    Methods of working coal and metal mines.
  2. 2

    Methods of working coal and metal mines planning and operations by Woodruff, Seth D.

    Published 1966
    Available for University of the Philippines System via ScienceDirect. Click here to access
    Also available remotely for University of the Philippines System via ScienceDirect. Click here to access thru EZproxy
    Electronic Resource

    Methods of working coal and metal mines planning and operations

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