Mining method with no delay between shot initiator and firing

A method for the electrical sequential initiation of explosions in which a series of detonators (D1-D11) is located in association with a series of explosive charges spaced from one another and in which a shot initiator 12 is used sequentially to initiate firing of the detonators at selected interva...

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Bibliographic Details
Main Authors O'BEIRNE; DEREK, ROFFE; ARTHUR E, KOOVARJEE; RATIKANT, WILSON; JOHN W, PLEANER; IVAN M, BOEHME; ROLF C
Format Patent
LanguageEnglish
Published 13.09.1988
Edition4
Subjects
AMMUNITION
BLASTING
HEATING
LIGHTING
MECHANICAL ENGINEERING
WEAPONS
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Summary:A method for the electrical sequential initiation of explosions in which a series of detonators (D1-D11) is located in association with a series of explosive charges spaced from one another and in which a shot initiator 12 is used sequentially to initiate firing of the detonators at selected intervals to detonate the explosive charges, characterized in that each detonator is fired without the provision of a delay between the initiation of firing of the detonator at the shot initiator and the actual commencement of firing of the detonator, further characterized in that the interval between the firing of successive detonators is selected from a range of 5 ms to 40 ms.
Bibliography:Application Number: US19870069209