Non-electric delay blasting method
作者： James R. Simon , Alan L. Davitt
DOI:
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摘要: A non-electric delay blasting method is provided which comprises the use of single trunk line detonating cord having a series relays, all same period, connected at spaced intervals along its length. Branch lines are in groups to between relays and each branch has detonator period attached thereto. The shorter than that detonators. detonators within detonate random manner. eliminates need large numbers different multi-charge blast thus simplifying preparation charge reducing inventories.
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