This paper introduced the applocation of the open stope method of blast transport with artificial pillars in the mining of inclined and extra-narrow gold vein, and made an evaluation of that method.

  • 本文论述人工柱爆力运搬空场采矿法在倾斜极薄金矿脉的应用,并对该法进行评价。
目录 查词历史