Bennett Mine, churn drill
Date scanned: 2002-05-16. USBM #57882; Churn drill, owned by Layne-Northwest, used at the Bennett Mine, Pickands, Mather and Company, Keewatin, Itasca County, Minnesota, to sink a 30-inch ventilation hole about 250 feet deep. Drilled in two operations, viz., 12-inch pilot hole, followed by reaming t...
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Format: | Still Image |
Language: | unknown |
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Colorado School of Mines. Arthur Lakes Library
1944
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Online Access: | http://hdl.handle.net/11124/6476 |