The tower containing the magnetic ore separators at Ogden mine. The stone building is a power house or boiler house. c. 1895. The Edison Ore Milling Company was a venture by Thomas Edison that began in 1881. Edison introduced some significant technological developments to the iron.
Iron ores are rocks and minerals from which metallic iron can be economically extracted. . The thermodynamic barriers to separating pure iron from these minerals are formidable and energy intensive, therefore all sources of iron used by.