The safes have a unique multi-layered structure which offers a high resistance to intrusion by tools and torch. The body and door are constructed of steel plates and are cast with Alchronite, ISM patented material and are reinforced with ISM patented special alloy grids which provide tool and torch protection. The safes have a multi-direction boltwork mechanism and a double locking system consisting of U.L. certified combination lock and a high security key lock for safes. All of the safe’s locks are protected by randomly scattered glass plate re-lockers.