2007-01-032022-02-032007-01-032022-02-03http://hdl.handle.net/11124/6947Figure 15 Typical roof section showing steel set and roof bolt support with Gunite applied to bolted section.Held in the Russell L. and Lyn Wood Mining History Archive, Arthur Lakes Library, Colorado School of Mines.Donor: United States Bureau of Mines.Steel set and roof bolt support are shown at an unidentified underground mine.Rights management statement available at: http://library.mines.edu/digital/rights.htmlMine supportsScenes, undergroundUnderground miningStillImage