The feasibility of which short-hole shrinkage method is used for mining of low-grade and submarginal ores in Huanren Mine is demonstrated in this paper.
论证了采用浅孔留
法对桓仁北岔区的低
进行综合回收的可行性。
The feasibility of which short-hole shrinkage method is used for mining of low-grade and submarginal ores in Huanren Mine is demonstrated in this paper.
论证了采用浅孔留法对桓仁北岔区的低进行综合回收的可行性。
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