USGS - science for a changing world

Bottom Layer of Lead Bricks for Gamma-Ray Castle

(as viewed from above with front of castle at bottom)

Bottom Layer

Each Brick is 8" by 4" by 2". This layer measures 36" by 32" and rests on a 5/8" thick sheet of aluminum measuring 48" by 48".

For more information about this report contact: Stephen L. Snyder or Joseph S. Duval
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