File:Frenchman Flat Underground Garage 006.jpg

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Description PLUMBBOB - 1957 - NEVADA TEST SITE -- Close-up of entrance to dual-purpose underground garage and mass shelter, sponsored by the Federal Civil Defense Administration under the Nevada Test Organization's Civil Effects Test Program. The retaining wall (left) has been partially dislodged, but does not interfere with operation of the massive door leading to the 90-feet square underground room. The underground structure, designed by Ammann and Whitney Consulting Engineers and covered by about three feet of earth, was planned and located to stand up to pressures of about 30 pounds per square inch.
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This image is available from the National Nuclear Security Administration Nevada Site Office Photo Library under number PLU-57-174.

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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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current00:51, 3 September 2012Thumbnail for version as of 00:51, 3 September 20121,153 × 1,441 (330 KB)Bomazi (talk | contribs){{Information |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, sho...

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