![]() ![]() On the mesa are drill holes, a few concrete pads, a loading ramp, and electrical equipment.« lessĪ Historical Evaluation of the U 12 t Tunnel, Nevada Test Site, Nye County, Nevada, Volume 5 of 6 In the Portal Area, cultural features are mostly concrete pads and building foundations other features include the portal, rail lines, the camel back, ventilation and cooling system components, communication equipment, and electrical equipment. A total of 89 cultural features were recorded: 54 at the portal and 35 on the mesa. The U 12 t Tunnel complex is composed of the Portal and Mesa Areas and includes an underground tunnel with a main access drift and nine primary drifts, a substantial tailings pile fronting the tunnel portal, a series of discharge ponds downslope of the tailings pile, and two instrumentation trailer parks and 16 drill holes on top of Aqueduct Mesa. These experiments were sponsored by the Defense Special Weapons Agency. ![]() ![]() Two conventional weapons experiments, Dipole Knight and Divine Eagle, were conducted in the tunnel portal area in 19. All six of the nuclear weapons effects tests and the high explosive test were sponsored by DTRA. Six nuclear weapons effects tests, Mint Leaf, Diamond Sculls, Husky Pup, Midas Myth/Milagro, Mighty Oak, and Mission Ghost, and onemore » high explosive test, SPLAT, were conducted within the U 12 t Tunnel from 1970 to 1987. The U 12 t Tunnel is one of a series of tunnels used for underground nuclear weapons effects tests on the east side of Rainier and Aqueduct Mesas. Department of Defense, Defense Threat Reduction Agency (DTRA). Department of Energy, National Nuclear Security Administration Nevada Site Office and the U.S. The work was conducted by the Desert Research Institute at the request of the U.S. This report presents a historical evaluation of the U 12 t Tunnel on the Nevada Test Site in southern Nevada. A Historical Evaluation of the U 12 t Tunnel, Nevada Test Site, Nye County, Nevada, Volume 1 of 6ĭOE Office of Scientific and Technical Information (OSTI.GOV)ĭrollinger, Harold Jones, Robert C. ![]()
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