FIELD: blasting. SUBSTANCE: electric detonator 7 is preliminary set into cell 2 so that to permit openings of transformer protecting units 3 and electric detonators to be axially alined. The detonators are then inserted in hole 7 one after the other together with cartridge-firing-pin 6 and a part of main pipe line 4 which is preliminary passed through the openings of the transformer units for protecting all electric detonators. EFFECT: enhanced safety. 1 dwg
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Authors
Dates
1995-07-09—Published
1989-03-30—Filed