2007-01-032022-02-032007-01-032022-02-03https://hdl.handle.net/11124/9806Date scanned: 2002-6-20.USBM #73122; Roof bolts and channels supporting high roof.Held in the Russell L. and Lyn Wood Mining History Archive, Arthur Lakes Library, Colorado School of Mines.Donor: United States Bureau of Mines.Three men stand in a tunnel with a high roof underground at an unidentified mine.Rights management statement available at: http://library.mines.edu/digital/rights.htmlMine supportsMinersScenes, undergroundUnderground miningStillImage