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A United States Government Class 5-B vault door, which has been tested and approved by the Government under Fed. Spec. AA-D-600D, is ballistic resistant and affords the following security protection: 20 man-hours against surreptitious entry. 30 man-minutes against covert entry. 10 man-minutes against forced entry.
In 1991, Michael Redman of Virginia brought a product liability suit against Sentry Group after his coin collection was stolen out of his Sentry Supreme Safe, Model #5570. Redman noticed the safe in a Value-Tique advertisement that appeared in the magazine Coin World. The magazine had advertised the safe as a “burglar deterrent”. [2]
The doors must be at least as strong as the walls. The usual design is now starting to incorporate vault doors. To reduce the weight, the door is normally constructed of steel, with a fitted steel lintel and frame. Very thick wood also serves and is more resistant to heat because it chars rather than melts.
The vault door is also molded of special concrete used to make the panels, but it can be made in several ways. The door mold differs from the panel molds because there is a hole for the lock and the door will be clad in stainless steel. Some manufacturers use the steel cladding as the mold and pour the concrete directly into it.
When sentries are relieved by their replacements, the sentry stationed at the Guardhouse, designated "No. 1", is conventionally relieved first. [ 5 ] [ 6 ] Modern guardhouses are manufactured with welded, galvanized steel construction, insulated, include heat and light, have 360 degree visibility, and can also be bullet resistant.
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The Mosler Safe Company was an American multinational manufacturer of security equipment specializing in safes and bank vaults. In 2001, the company was acquired by Diebold Inc. after going bankrupt.
He worked as a Bank Vault Engineer for John M. Mossman from 1900-1904 where he designed the Maiden Lane Safe Deposit Company vault among others. Frederick S. Holmes started his company of the same name in 1901 and by 1910 was designing jamb-controlled vaults for which he was known.