对于金属矿的开采，一般认为分层崩落法与其他采矿法相比，是一种成本高、产量低、木材消耗量大的采矿方法。
Generally top slicing is a mining method of high cost, low productivity, and large consumption of timber as compared with other methods for mining metalliferous ore bodies.
开采上述金属矿的生产商每天所面对的危机与中非矿业类似，为了等待价格回升，它们也得封存遍布全球的矿产以节省现金支出。
Miners of these metals daily face crises similar to Camec's and mothballing mines around the world to save cash as they wait for a price recovery.
涞源县矿产已查明的有金属、非金属矿43种，矿点160个，具有一定开采价值。
Laiyuan County minerals have been identified are metals, non-metallic minerals 43, 160 occurrence, the exploitation of a certain value.
本文将模糊数学中的模糊概率测度理论用于研究地下开挖尤其是地下金属矿开采而导致的岩体移动和变形问题。
A mathematical theory of fuzzy probability measure has been used for solving the problems of rock mass displacements and deformations due to excavation, especially in the. mining of metallic ore.
机器人技术：该项技术可能会使从深海而不是陆地矿藏开采金属矿成为可能。但与此同时也将需要一些更加精巧的技术。
Robotics: it might make sense to mine metals from the sea bed, rather than from terrestrial mines. But it will require some nifty technology.
无论是金属矿还是非金属矿的开发，无论是露天开采还是地下开采，矿业开发对其所处的地质生态环境都会产生巨大而深远的影响。
The exploitation of metal and nonmetal ore, or open mine and underground mine, all does tremendous and ever-lasting effect on its geo - ecological environment.
崩落采矿法是金属矿山地下开采应用较多的一种高效采矿方法，覆岩下底部放矿损失贫化大是该采矿法的一个特点。
Caving method is a high efficiency mining method widely used in underground metal mines. While it is a characteristic of the method that the loss rate and dilution rate is high.
金属矿地下开采过程中，采场顶板稳定是矿山正常、高效回采的前提。
During the process of underground mining, the stabilization of stope roof is the basement of normal and productive mining.
金属矿地下开采过程中，采场顶板稳定是矿山正常、高效回采的前提。
During the process of underground mining, the stabilization of stope roof is the basement of normal and productive mining.
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