In Chimashan Copper Mine, the orebody is mid-thick androck mass in the hanging-wall is moderately stable.

  • 赤马山铜矿系中厚以上矿体,上盘中等稳固.采用浅眼留矿法开采时,贫化损失大,采矿强度低,难以适应当前生产要求.

  • 互联网摘选 2025-01-18 11:41:20

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