3 Attachment(s)
Explosives in Safe-Breaking.
In response to your comments Al.
Back to the subject; what happens if, instead of trying to blow holes in a safe from the inside (explosives in a key-hole or bored/burnt cavity), a shaped cutting charge as used by military and demolition is applied directly to the face?
Obviously I can't go into much detail here save to say that it comes down to the safe in question and the weaknesses of the particular construction. With the Fichet as previosly illustrated I was asked specifically by the Insurance Surveyors witnesses to adopt the edge blowing technique after having satisfied them that removing the locks would accomplish nothing. From that stage secondary charges of unlimited quantities could have been placed within the lockcase and the door opened. This technique was frequently used in the 50's and 60's without necesserily destroying the contents* as the fire chamber would normally impact towards the back of the interior.
Likewise the edge blowing could have been further exploited by mechanical means exposing the front shooting bolts and leaving the top and bottom ones to be forced by wedge, lever, or jack.
Test houses seem to favour drilling shot holes beween specific barriers to exploit the shear plane.
Shaped charges for piercing or slotting would again just be one step in the total procedure. The detonation could not be muffled being an external charge.
* Attachment 14989Attachment 14990
The Double Door Hobbs actually contained watches some of which were later identified when submitted for repair. Obviously Shock-Proof movements.