Part of ore body in Jinchangyu Gold mine is this kind of gently inclined thin and medium thick ore body with unstable roof, it is hard to mine.
金厂峪金矿部分顶板不稳定的缓倾斜薄至中厚矿体，其开采难度很大。
Mining of gently inclined thin and medium thick ore body with unstable roof isregarded as typical hard-to-mine ore body.
顶板不稳定的缓倾斜薄、中厚矿体为典型的难采矿体。
The technology is very useful for exploiting gentle-inclined thin bauxite body as well as for open-pit mining of iron ore.
该工艺对于缓倾斜薄矿体铝土矿、铁矿露天开采具有重要意义。
The technology is very useful for exploiting gentle-inclined thin bauxite body as well as for open-pit mining of iron ore.
该工艺对于缓倾斜薄矿体铝土矿、铁矿露天开采具有重要意义。
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