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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Description
English: 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.
Date
Source The American Cyclopædia, v. 2, 1879, p. 698 (Fig. 1).
Author Unknown authorUnknown author
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This work is in the public domain in the United States because it was published (or registered with the U.S. Copyright Office) before January 1, 1929.
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Note: This tag should not be used for sound recordings.PD-1923Public domain in the United States//commons.wikimedia.org/wiki/File:AmCyc_Blasting_-_Original_Face_of_Rock.jpg

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current16:23, 19 March 2014Thumbnail for version as of 16:23, 19 March 2014701 × 318 (61 KB)Library Guy (talk | contribs){{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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