The outer body is constructed from 1/8" (3.17mm) B.S.4360 - 43A mild steel and is electrically welded to complete by modern processes. The inner body lining is also constructed from 1/8” (3.17mm) mild steel and is encased on all five sides by tough cyanide hardened plates which give increased drill protection against criminal attack.
Between the outer body and the plated lining assembly is an anti-penetration monolith of Basalite which has a crushing strength in excess of 11,500 lbs per inch and contains WIRAND carbon steel fibres which are evenly distributed throughout the matrix by the use of super plasticizers.
The overall body thickness is 3 1/2" (89mm) and both the inner and outer body sections are keyed into the protective matrix at multiple random points to ensure complete adhesion and resistance to delamination attacks by criminals.
The door is an electrically welded monolith incorporating a drill and torch resistant ALURAMIC Matrix which has an overall thickness of 1 3/4" (45mm). The door includes a main slab of 1" (25mm) thickness which is pre-cast and keyed directly into the inner lockcase to prevent delamination. The door is fabricated from 1/4" (6mm) and 3/16" (4.75mm) thick mild steel plate to B.S. 4360 - 43A specification.
At strategic protection points in the door assembly S.M.P. engineers insert one of the hardest known metal compounds in use today which gives 1850 V.P.N. or 95 Rockwell 'A" resistance to drilling and cutting tools used by criminals. This compound is harder than any commercially used tool steels.
The boltwork operates on three sides of the door with bolts of 1 1/4"”(32mm) diameter travelling 1" (25mm) into the inner lining. The bolt ends are protected by steel cups welded to the inner lining and also double protected from criminal attacks by cyanide hardened plates strategically positioned and welded between the outer and inner body sections. Fixed Dogging bolts of 1 1/4” (32mm) diameter protect the hinged edge of the door from wedging and explosive attacks.
The boltwork is secured by either an S.M.P. 5520 Keylock or a Sargent and Greenleaf 4-wheel keyless Combination lock. Multiple locking is available on all unit sizes. The S.M.P. S.520' Keylock is an improved version of the standard seven lever keylock, having a new design concept of open ended false notched levers receiving Twin Talons which are randomly positioned to prevent lock picking. The random positioning of the Talons across the lock bolt prevents criminals from drilling to remove the bolt stump.
The safe is fitted with both live and dead Anti-Explosive Devices. Each of these mechanisms is non returnable once activated and permanently lock the boltwork making the safe inoperable.
The Live Anti-Explosive Device further protects the safe every time the safe is locked on the actuation of the lock bolt. The vital parts of the live A.E.D. are protected by the strategically positioned Abrasodur 46 welded metal inserts.
The dead Anti-Explosive Devices are connected and primed by stainless steel (Multi-Strand) wire to special glass plates which in the event of an attack by force, drills, explosives or oxy-acetylene will shatter and release spring loaded mechanisms which once activated are non-returnable rendering the safe permanently locked.
Random positions for the A.E.D. assemblies are adopted with varied positions also for the glass plate connections. Every circuit of stainless steel wire is randomly selected to ensure the complete originality of all connections from the glass plate to A.E.D. mechanisms.
Thermal AED device
Randomly positioned Thermal Links are included in the boltwork assembly, which in the event of an oxy-acetylene attack will actuate at temperatures of 160F triggering the A.E.D. assembly rendering the safe inoperable.
All safes manufactured at SMP have provision for anchoring to either wood or concrete floors. This operation needs to be carried out by qualified personnel from the manufacturer or his agent.
Fittings and deposit facilities
All safes can be supplied with removable shelves adjustable at 12mm pitches and self-locating clips. Lockable Full Width Drawers at 75mm deep are available for all models. Rotary Traps - Angled Deposit Tubes - Drawer Type Traps available as optional extras.