Bennettt Mine, churn-drill tool

• Main Author: Petersen, Max S.
• Other Authors: Arthur Lakes Library, Russell L. and Lyn Wood Mining History Archive, United States. Bureau of Mines
• Format: Still Image
• Language: unknown
• Published: Colorado School of Mines. Arthur Lakes Library 1944
• Subjects: Pickands; Mather and Company; Iron mines and mining; Mining; Underground mining; Petersen; Keewatin
• Online Access: http://hdl.handle.net/11124/6474

Date scanned: 2002-05-16. USBM #57880; Churn-drill tool, (lying in foreground) used to ream a 12-inch pilot hole to 30 inches in diameter. Used at the Bennett Mine, Pickands, Mather and Company, Keewatin, Itasca County, Minnesota, to sink a 30-inch ventilation hole. Dec. 1944 / Max S. Petersen. Held...