2007-01-032022-02-032007-01-032022-02-03https://hdl.handle.net/11124/7431Date scanned: 2002-6-18.NG-2; Gardner-Denver D-89 rock-drill carriage for drilling 2-1/2" diameter blast holes. A light weight drill easily moved by hand. Drill in bottom position. Notice collaring device arms. National Gypsum Company, National City, Michigan. - F. G. Anderson - November 14, 1947.Held in the Russell L. and Lyn Wood Mining History Archive, Arthur Lakes Library, Colorado School of Mines.Donor: United States Bureau of Mines.The drill shown is probably at the National quarry. The National Quarry (Tawas Quarry, Tawas Mine?) is an open pit gypsum mine near National City, Michigan operated by the National Gypsum Company. The mine was an important gypsum producer in Michigan for decades. The National Gypsum Company began working the gypsum deposit here in 1925 and the existing town was renamed National City.Rights management statement available at: http://library.mines.edu/digital/rights.htmlNational Gypsum CompanyGypsum industry and tradeMiningOpen pit miningStillImage