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A780246 U7AY TOPMAST DOWNHOLE OPERATION MCKOWN(Project Engineer) MAR 6 78EG&G/NTS PHOTO LAB Publication Date: 3/6/1978 DOWNHOLE OPERATION; EDGERTON, GERMESHAUSEN & GRIER; EG&G; MEASUREMENT & RELATIONSHIP; NEVADA; NEVADA TEST SITE; NTS; NUCLEAR ENERGY TECHNOLOGY; TAPE MEASURES; TEST SITES; TOPMAST; UGT; UNDERGROUND TESTING; WIRE & CABLES historical images. 1972 - 2012. Department of Energy. National Nuclear Security Administration. Photographs Related to Nuclear Weapons Testing at the Nevada Test Site.
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