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HooverDamJumboRig.jpg (770 × 557 pixels, file size: 134 KB, MIME type: image/jpeg)

Summary

Description
English: This piece of equipment, named a Jumbo Rig, was designed to speed up the Hoover Dam's tunnel drilling process. Built on the back of a 10-ton truck, 24 to 30 drills could be operated at once.
Source http://www.usbr.gov/lc/hooverdam/images/jumbo.jpg
Author Bureau of Reclamation

Licensing

Public domain
This work is in the public domain in the United States because it is a work prepared by an officer or employee of the United States Government as part of that person’s official duties under the terms of Title 17, Chapter 1, Section 105 of the US Code. Note: This only applies to original works of the Federal Government and not to the work of any individual U.S. state, territory, commonwealth, county, municipality, or any other subdivision. This template also does not apply to postage stamp designs published by the United States Postal Service since 1978. (See § 313.6(C)(1) of Compendium of U.S. Copyright Office Practices). It also does not apply to certain US coins; see The US Mint Terms of Use.
This file has been identified as being free of known restrictions under copyright law, including all related and neighboring rights.

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Transferred from en.wikipedia to Commons by NortyNort using CommonsHelper.

The original description page was here. All following user names refer to en.wikipedia.
  • 2010-06-20 03:47 NortyNort 770×557× (137028 bytes) {{Information |Description = This piece of equipment, named a Jumbo Rig, was designed to speed up the Hoover Dam's tunnel drilling process. Built on the back of a 10-ton truck, 24 to 30 drills could be operated at once. |Source = http://www.u

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137,028 byte

557 pixel

770 pixel

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a3d331affc5160b863dc7bb860703e3b37eecc41

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Date/TimeThumbnailDimensionsUserComment
current08:18, 23 March 2011Thumbnail for version as of 08:18, 23 March 2011770 × 557 (134 KB)File Upload Bot (Magnus Manske) {{BotMoveToCommons|en.wikipedia|year={{subst:CURRENTYEAR}}|month={{subst:CURRENTMONTHNAME}}|day={{subst:CURRENTDAY}}}} {{Information |Description={{en|This piece of equipment, named a Jumbo Rig, was designed to speed up the Hoover Dam's tunnel drilling p

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