shrinkage stoping without floor pillar.
无底柱留矿法
Bottom Structure Evolvement and Effect of Shallow Hole Shrinkage Stoping System
浅眼留矿法的底部结构演化及其效果
Discussion on Reducing Ores Dilution and Loss Rates Effectively in Shallow Shrinkage Stoping in Longtoushan Gold Mine of Guangxi
广西龙头山金矿浅孔留矿采矿法有效降低贫化损失的探讨
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