For the feasibility research of a metal mine and its preliminary design stage , focusing on the mining design, some main problems on the design of opencast mining such as the design steps of opencast mining , the confirmation of mining conditions and mining boundary , the determination of the mine's productive capacity and equipment level , the selection of the transportation system for open pit development , and the design of waste rock yard are summarized and expounded.%对金属矿山在可行性研究和初步设计阶段,以采矿设计为重点,概括阐述了露天开采设计的步骤与开采条件、露采境界的确定,矿山生产能力以及装备水平的确定,露天矿开拓运输系统的选择及废石场的设计等露天开采设计的主要问题。
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机译:矿山安全与健康管理局金属与非金属矿山安全与健康调查报告:表面非金属矿山尺寸石,致命动力拖运事故,2006年4月11日,1845年Texas stone products,Inc.,Texas stone products,Inc.,Lometa,Lampasas德克萨斯州郡,矿山ID第41-03518号。