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Fail:DeQuille 137 Timbering the Mines.jpg

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Keterangan
English: Square-set timbering as used in the Comstock mines, 1877. This method of timbering was invented by Philip Deidesheimer.
Tarikh published 1877
Sumber http://www.nevadaobserver.com/Reading%20Room%20Documents/DeQuille%20The%20Big%20Bonanza/DeQuille%20137%20Timbering%20the%20Mines.jpg
Pengarang Dan DeQuille, History of the Big Bonanza
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239,926 bait

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853 piksel

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577 piksel

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Sejarah fail

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Tarikh/WaktuGambar kenitUkuranPenggunaKomen
semasa18:33, 1 Disember 2011Gambar kenit bagi versi pada 18:33, 1 Disember 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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