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File:DeQuille 137 Timbering the Mines.jpg

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Description
English: Square-set timbering as used in the Comstock mines, 1877. This method of timbering was invented by Philip Deidesheimer.
Date published 1877
Source http://www.nevadaobserver.com/Reading%20Room%20Documents/DeQuille%20The%20Big%20Bonanza/DeQuille%20137%20Timbering%20the%20Mines.jpg
Author Dan DeQuille, History of the Big Bonanza
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current18:33, 1 December 2011Thumbnail for version as of 18:33, 1 December 2011577 × 853 (234 KB)Tillman{{Information |Description ={{en|1=Square-set timbering as used in the Comstock mines, 1877. This method of timbering was invented by Philip Deidesheimer. }} |Source =http://www.nevadaobserver.com/Reading%20Room%20Documents/DeQuille%20The%20Big

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