Williams, M. L.2007-01-032022-02-032007-01-032022-02-03https://hdl.handle.net/11124/5721Date scanned: 2002-6-20.USBM #70709; Warning sign at entrance to shops. Sign is used to warn persons entering shop from adjoining office. Huron Portland Cement Company, Alpena, Michigan. - M. L. Williams - November 1948.Held in the Russell L. and Lyn Wood Mining History Archive, Arthur Lakes Library, Colorado School of Mines.Donor: United States Bureau of Mines.A warning sign reading "STOP" extends out at the entrance to shops of the Huron Portand Cement Company. The Company began operations on the north shore of Thunder Bay, Michigan in 1901 and was producing cement by 1907. By 1910 it had become the largest cement producer in the world, using limestone quarries around Alpena and Rogers City. The Company was purchased by the Lafarge Corporation in 1986 and continued operations in Alpena.Rights management statement available at: http://library.mines.edu/digital/rights.htmlHuron Portland Cement CompanyIndustrial mineralsMachinery and equipmentQuarries and quarryingScenes, interiorStillImage