File:NTS - Drill-back rig.jpg

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Drill-back rig in the Drill-Back Training Area located to the east of the Gabbs ground zero in Area 9 of the Nevada Test Site.

Drill-backs were conducted to obtain a complete picture of a nuclear device’s performance. Results of all the prompt diagnostic experiments were correlated with the radiochemical analysis of the test debris. As soon as it was safe, drillers would set up a post-shot drill rig to recover samples. Once the angled hole was drilled through to the radioactive debris in the bottom of the collapsed cavity, radiochemists and drilling engineers would conduct tests to determine the areas richest in radioactive elements.
Date Unknown date
Unknown date
Source Nevada Test Site Guide, DOE/NV-715
Author Federal Government of the United States
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Public domain This image is a work of a United States Department of Energy (or predecessor organization) employee, taken or made as part of that person's official duties. As a work of the U.S. federal government, the image is in the public domain.

Please note that national laboratories operate under varying licences and some are not free. Check the site policies of any national lab before crediting it with this tag.

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current15:48, 2 September 2012Thumbnail for version as of 15:48, 2 September 2012972 × 395 (41 KB)Bomazi (talk | contribs){{Information |Description=Drill-back rig in the Drill-Back Training Area located to the east of the Gabbs ground zero in Area 9 of the Nevada Test Site. <br /> Drill-backs were conducted to obtain a complete picture of a nuclear device’s performance...

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