2007-01-032022-02-032007-01-032022-02-03https://hdl.handle.net/11124/7826Date scanned: 2002-08-26.USBM #35880; Figure 14 Metal fire doors on concrete frames at top of raises.Held in the Russell L. and Lyn Wood Mining History Archive, Arthur Lakes Library, Colorado School of Mines.Metal fire doors are shown underground at an unidentified mine.Rights management statement available at: http://library.mines.edu/digital/rights.htmlMiningScenes, undergroundUnderground miningStillImage