1847 4 Dec. (caption) Rowe's universal pulverizing pressure ore mill.
1868 T. F. Cronise 258 The immense demand for fuel created by the ore mills working the Comstock ores.
1991 (Nexis) 23 Dec. (Commodities section) 7 a Philex intends to build an ore mill with a capacity of 3,500 metric tons a day.