Standardization, parameter optimization and computerization are introduced in the engineering of open-pit bench Masting.
露天矿台阶爆破设的“三”范、参数优和算机辅助设。
Simple geological structure, an open-pit mine, the development of high value for one of the three cryptomelane.
造简单,属露天矿,开发价值高,为全国三大钾矿之一。
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Where better Barton says then here on the remains of old strip mines.
巴顿,没有比这个旧露天矿的残余物上更树地方了。
Some comes from large industrial open pit mines.
有些来大型工业露天矿。
970 meters down is the deepest hole ever dug that still has an open sky above it — the Bingham Canyon open-pit mine in Utah.
970米深处,是迄今为止所挖的最深的能见天日的洞——位于犹他州的宾汉峡谷露天矿坑。
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