Importance

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Abstract

One embodiment provides an apparatus. The apparatus includes a substrate body that includes a top end, an opposing bottom end and a curved outer surface positioned there between, and a clear sight bore aperture centered at a longitudinal axis of the substrate body. The apparatus further includes a trunk line aperture defined in the outer surface of the substrate body. The trunk line aperture has a first end positioned at a top end of the substrate body, off-center from the longitudinal axis. The first end of the trunk line aperture is configured to couple to a detonator. The apparatus further includes a plurality of helical track apertures defined in the outer surface of the substrate body. A respective first end of each helical track aperture is coupled to the trunk line aperture. The apparatus further includes a plurality of termination apertures defined in the outer surface of the substrate body adjacent the bottom end of the substrate body. One termination aperture is coupled to the trunk line aperture at a second end of the trunk line aperture. The second end is opposing the first end and each remaining termination aperture is coupled to a respective helical track aperture. The trunk line aperture, the plurality of helical track apertures and the plurality of termination apertures are configured to contain an explosive material.

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First Claim