Primer centering device for large diameter blastholes

Details Primer centering device for large diameter blastholes Primer centering device for large diameter blastholes

F - Mech Eng,Light,Heat,Weapons

42

D

102/30, 102/8

F42D 1/00 (2006.01) F42B 3/185 (2006.01) F42B 3/26 (2006.01) F42D 1/22 (2006.01)

Patent

CA 1315597

ABSTRACT An improved method for reducing misfires in large diameter unlined blastholes by fitting on the primer used in the blasthole a centering device comprised of a semi- conducting plastic material.

578771

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