Petersen, Max S.2007-01-032022-02-032007-01-032022-02-03https://hdl.handle.net/11124/6829Date scanned: 2002-6-21.O-38; Warning sign on railroad engine. Trout Lake Concentrator, Oliver Iron Mining Company, Coleraine, Minnesota (Canisteo District) - M. S. Petersen - Sept. 1945.Held in the Russell L. and Lyn Wood Mining History Archive, Arthur Lakes Library, Colorado School of Mines.Warning signs saying "Cross 30 Feet Beyond Train" are displayed on a railroad engine at the Trout Lake Concentrator. The Trout Lake Concentrator was an ore washing plant built on Trout Lake, in the Mesabi Range near Coleraine, Minnesota. The plant went into operation in about 1907, concentrating iron ore and washing the tailings into the lake. The plant was closed and dumping of ore tailings into Trout Lake was discontinued, possibly in the 1940s. The Oliver Iron Mining Company was organized in the early 1890s to manage property in the Mesabi Range. The Company acquired mineral properties elsewhere in Minnesota and in the Upper Peninsula. By 1901 the Company was a division of United States Steel Corporation.Rights management statement available at: http://library.mines.edu/digital/rights.htmlOliver Iron Mining CompanyIron ore processing plantsRailroadsStillImage