File:NNSA-NSO-792.jpg

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NNSA-NSO-792.jpg ‎(360 × 285 pixels, file size: 51 KB, MIME type: image/jpeg)

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Description The tunnel boring machine (TBM) begins drilling into Little Skull Mountain. The TBM bored an 18-foot seven-inch diameter tunnel using 38 disc cutters and the cutting head. It weighed about 256 tons and had a horsepower rating of 900 HP.
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This image is available from the National Nuclear Security Administration Nevada Site Office Photo Library under ID 792.

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Author National Nuclear Security Administration / Nevada Site Office
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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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current08:09, 2 September 2012Thumbnail for version as of 08:09, 2 September 2012360 × 285 (51 KB)Bomazi (talk | contribs){{Information |Description=The tunnel boring machine (TBM) begins drilling into Little Skull Mountain. The TBM bored an 18-foot seven-inch diameter tunnel using 38 disc cutters and the cutting head. It weighed about 256 tons and had a horsepower rat...

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