Dwyer, Charles F.2007-01-032022-02-032007-01-032022-02-03https://hdl.handle.net/11124/9359Date scanned: 2004-03-18.Held in the Russell L. and Lyn Wood Mining History Archive, Arthur Lakes Library, Colorado School of Mines.Von Roll - Klewenalp.color photographsIn copyright - non-commercial use permitted (http://rightsstatements.org/vocab/InC-NC/1.0/).Von Roll AGRopewayStillImage