开采方法 meaning in English

reoovery method

Study of mining methods for highwall ore of an open pit
露天矿挂帮矿开采方法的研究
Mining method under coal pillar in close distance coal seam
近距离煤层煤柱下的开采方法
Study of mining method for inclined thin vein in a copper ore mine
倾斜脉状薄矿体开采方法的研究
Discussion on the mining process of potash mine in vientiane of laos
老挝万象钾盐矿开采方法的探讨
Comment on finding coal and reasonable mining method in aged mine old area
试论衰老矿井老区找煤合理开采方法

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