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

Summary

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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Original upload log

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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18 March 2013

image/jpeg

f4d216f69e49cabcd6bfe00816be6950e35ed48c

359,687 byte

508 pixel

699 pixel

File history

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