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   W:: Walter R. (Walter Richard) Crane : download and read ebooks
Gold and silver; comprising an economic history of mining in the United States, the geographical and geological occurrence of the precious metals, with their mineralogical associations, history and description of methods of mining and extraction of values, and a detailed discussion of the production

Ore mining methods, comprising descriptions of methods of support in extraction of ore, detailed descriptions of methods of development of mines, of stoping and mining in narrow and wide veins and bedded and massive deposits including stull and square-set mining, filling and caving methods, open cut

Ore mining methods, comprising descriptions of methods of support in extraction of ore, detailed descriptions of methods of stoping and mining in narrow and wide veins and bedded and massive deposits including stull and square-set mining, filling and caving methods, open-cut work and a discussion of

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L. H. (Lydia Howard) Sigourney38 books in djvu formatP. (Patrick) Tynan1 book in epub formatGustave Louis Richard Bernutz2 books in epub format