File:AmCyc Blasting - Mode of Forming Steps (“Stoping”; Front View).jpg
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AmCyc_Blasting_-_Mode_of_Forming_Steps_(“Stoping”;_Front_View).jpg (398 × 234 pixels, file size: 36 KB, MIME type: image/jpeg)
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 18:25, 19 March 2014 | 398 × 234 (36 KB) | Library Guy | {{Information |Description ={{en|1=Woodcut/drawing illustrating a method a forming steps in rock blasting called stoping (front view)}} |Source =''The American Cyclopædia, v. 2, 1879, p. 700 (Fig. 3;right). |Author =unknown artist |... |
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