File:CPRR Summit Tunnel Central Shaft.jpg

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CPRR_Summit_Tunnel_Central_Shaft.jpg (699 × 508 pixels, file size: 351 KB, MIME type: image/jpeg)

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Description
English: The vertical central shaft of the CPRR "Summit Tunnel" (Tunnel #6) at Donner Summit which allowed drilling and excavation of the tunnel to be carried out on four faces at once during construction of the 1,659 foot tunnel over a period of 15 months in 1866-67. Original digital photograph taken by the uploader (Centpacrr) inside the Summit Tunnel in August, 2003.
Date 18 March 2013 (original upload date)
Source Transferred from en.wikipedia to Commons.
Author Centpacrr at English Wikipedia

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Centpacrr at English Wikipedia, the copyright holder of this work, hereby publishes it under the following licenses:
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Attribution: Centpacrr at English Wikipedia
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Original upload log

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The original description page was here. All following user names refer to en.wikipedia.
Date/Time Dimensions User Comment
2013-03-18 05:40 699×508× (359687 bytes) Centpacrr Minor tweaks.
2013-03-18 05:27 700×509× (369468 bytes) Centpacrr The vertical central shaft of the [[Central Pacific Railroad|CPRR]] "Summit Tunnel" (Tunnel #6) and [[Donner Summit]] which allowed drilling and excavation of the tunnel to be carried out on four faces at once during construction of the 1,659 foot tunn...

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Date/TimeThumbnailDimensionsUserComment
current05:59, 13 March 2016Thumbnail for version as of 05:59, 13 March 2016699 × 508 (351 KB)OgreBot (talk | contribs)(BOT): Reverting to most recent version before archival
05:59, 13 March 2016Thumbnail for version as of 05:59, 13 March 2016700 × 509 (361 KB)OgreBot (talk | contribs)(BOT): Uploading old version of file from en.wikipedia; originally uploaded on 2013-03-18 05:27:29 by Centpacrr
03:18, 28 February 2016Thumbnail for version as of 03:18, 28 February 2016699 × 508 (351 KB)FastilyClone (talk | contribs)Transferred from enwp

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