Patent ID: 7908970

Claim:
An apparatus for creating a breach in a target, comprising: a strip of explosive charge coupled to a dual initiation structure wherein the strip of explosive charge comprises a top surface and a bottom surface, wherein the strip of explosive charge is substantially not contained within a housing, and wherein the bottom surface is capable of being interfaced with to the target; a first firing contact of an explosive firing train comprising a first surface area, wherein less than the entire first surface area of the first firing contact abuts the top surface of the strip of explosive charge and wherein a portion of the first surface area overhangs a first edge of the top surface of the strip of explosive charge; a second firing contact of the explosive firing train comprising a first surface area, wherein less than the entire first surface area of the second firing contact abuts the top surface of the strip of explosive charge and wherein a portion of the second surface area overhangs a second edge of the top surface of the strip of explosive charge; and means for initiating the explosive firing train and communicating a detonation from a single initiation source to the first and second firing contacts and detonating the strip of explosive charge, wherein the detonation operatively creates a fracture in the target along a single fracture contour and operatively creates the breach in the target.