File:NNSA-NSO-190.jpg

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	Date/Time	Thumbnail	Dimensions	User	Comment
current	14:30, 2 September 2012		952 × 757 (237 KB)	Bomazi	{{Information \|Description=March 24, 1953 - Collimators were used March 24, 1953 for the first time in continental nuclear tests (at Nevada Proving Grounds). This system replaces a more expensive coaxial cable system for recording gamma rays or neut...

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