东峪
东峪-
东桐峪金矿8号脉矿柱的回采
Pillar recovery of orebody no. 8 at East-Tongyu Gold Mine
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经过多年的生产实践证明，此种矿柱回采方案对东桐峪金矿8号脉矿柱的回采是适宜的，并且收到了较好的经济效益。
A long-term practice has proved that the pillar extraction method is suitable not only for the recovery of orebody no.8 in this mine but also achieves better economic effects .