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 work and a discussion of costs of mining 1917 [LeatherBound]
Walter R. (Walter Richard) Crane
Vendido por True World of Books, Delhi, India
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