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  2. Safe room - Wikipedia

    en.wikipedia.org/wiki/Safe_room

    For strong storms or tornadoes, a storm safe room must be built to withstand high winds and flying debris, even if the rest of the residence becomes severely damaged or destroyed. Specific concerns include: [2] The safe room should be adequately anchored to the foundation to resist overturning and uplift. The walls, ceiling, and door of the ...

  3. Mosler Safe Company - Wikipedia

    en.wikipedia.org/wiki/Mosler_Safe_Company

    When the U.S. government began building bunkers and silos during the Cold War, Mosler became the contractor for blast doors. One set, installed at the Atomic Energy Commission 's Oak Ridge National Laboratory [ 3 ] : 47 in 1961, weighed approximately 65 tons per door, and were considered the heaviest doors installed in the United States at ...

  4. United States government safe and vault door specifications

    en.wikipedia.org/wiki/United_States_government...

    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.

  5. Curtis Bros. & Co - Wikipedia

    en.wikipedia.org/wiki/Curtis_Bros._&_Co

    They bought out the Claussen and Thornburg interests in the firm of Claussen, Thornburg & Smith, a small sash and door factory. (The original firm was known as Curtis, Hemingway & Co.) In 1867 George M. Curtis bought out the company holding of Mr. Smith, and in 1868 Charles F. Curtis and George M. Curtis bought out Hemmingway's interest.

  6. Electromagnetic lock - Wikipedia

    en.wikipedia.org/wiki/Electromagnetic_lock

    Fail-safe locking devices are unlocked when de-energized. Direct pull electromagnetic locks are inherently fail-safe. Typically the electromagnet portion of the lock is attached to the door frame and a mating armature plate is attached to the door. The two components are in contact when the door is closed.

  7. Pie safe - Wikipedia

    en.wikipedia.org/wiki/Pie_safe

    A pie safe, also called a pie chest, [1] pie cupboard, kitchen safe, and meat safe, [2] is a piece of furniture designed to store pies and other food items. This was a normal household item before iceboxes came into regular use, and it was an important part of the American household starting in the 1700s and continuing through the 1800s.