PDF(132 KB)
EXCAVATING SIDE DITCH OF OPERATION TUNNEL BY CONTROLLED BLASTING
ZHANG Cui-bing, YANG Nian-hua
Journal of Railway Engineering Society ›› 2003, Vol. 20 ›› Issue (2) : 86-88.
PDF(132 KB)
PDF(132 KB)
EXCAVATING SIDE DITCH OF OPERATION TUNNEL BY CONTROLLED BLASTING
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