An item in the Feb. 17 edition of Weapons Complex Morning Briefing incorrectly implied that a planned subcontract for borehole drilling at the Nevada National Security Site would be used to help examine the suitability of boreholes for high-level waste disposal. The purpose of the planned subcontract is to drill boreholes for the Underground Nuclear Explosion Signatures Experiment (UNESE), which addresses scientific knowledge gaps associated with nuclear explosion verification and nuclear nonproliferation, according to NNSS managing contractor National Security Technologies, LLC. The planned boreholes “are designed to monitor subsurface gas emissions from inert chemical tracers injected into the cavity of a previous nuclear explosion,” the company said in a statement yesterday.
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