File:Frenchman Flat Underground Garage 003.jpg

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Description PLUMBBOB - 1957 - NEVADA TEST SITE -- The reinforced concrete blast door for the dual-purpose garage and mass shelter, sponsored by the Federal Civil Defense Administration, is shown at left. The view, looking outward, shows the front part of the door, which is four feet thick and weighs about 100 tons. The massive door is mounted on a monorail (not shown). The dark tubing around the edge of the door frame is a sealing gasket, imbedded in a metal groove. When the door is shut the gasket inflates automatically to form an air-tight closure.
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This image is available from the National Nuclear Security Administration Nevada Site Office Photo Library under number PLU-57-175.

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Author National Nuclear Security Administration / Nevada Site Office
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Public domain This image is a work of a United States Department of Energy (or predecessor organization) employee, taken or made as part of that person's official duties. As a work of the U.S. federal government, the image is in the public domain.

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current00:52, 3 September 2012Thumbnail for version as of 00:52, 3 September 20121,435 × 1,166 (350 KB)Bomazi (talk | contribs){{Information |Description=PLUMBBOB - 1957 - NEVADA TEST SITE -- Interior view of the dual-purpose garage and mass shelter, sponsored by the Federal Civil Defense Administration, showing two of the three rows of support columns. Radiation dosimetry ...

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