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新城金矿自 1 980年投产以来 ,相继关闭了 -3 0～ -1 2 0m共 5个中段 ,该文介绍有关这几个中段的关闭情况及所积累的经验。
Since it was put into operation in 1980, the Xincheng Gold Mine has shut down 5 mid-levels of -3.0 ~ -120m in succession. This article introduces the closing conditions and accumulated experience of these mid-levels.