File:AmCyc Blasting - Original Face of Rock.jpg
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AmCyc_Blasting_-_Original_Face_of_Rock.jpg (701 × 318 pixels, file size: 61 KB, MIME type: image/jpeg)
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 16:23, 19 March 2014 | 701 × 318 (61 KB) | Library Guy | {{Information |Description ={{en|1=The ground plan of the galleries and return chambers for a mine. The face of the rock is 210 ft. long and 115 ft. high.}} |Source =''The American Cyclopædia'', v. 2, 1879, p. 698 (Fig. 1). |Author... |
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