PDF(183 KB)
DEEP HOLE BLASTING TECHNIQUE IN COAL BED OF JIAZHUQING HIGH- GAS TUNNEL
LI Kai-yan
Journal of Railway Engineering Society ›› 2002, Vol. 19 ›› Issue (2) : 38-41.
PDF(183 KB)
PDF(183 KB)
DEEP HOLE BLASTING TECHNIQUE IN COAL BED OF JIAZHUQING HIGH- GAS TUNNEL
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