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 ore milling industry but the . He patented a method of extracting the metal using a large electromagnet.
Edison and Ore Refining Engineering and Technology History Wiki
Apr 12, 2017 . A tower containing magnetic ore separator at Edison's Ogdensburg, . Edison first became interested in iron mining around 1880, and he . There was other equipment to re refine what was left over to extract even more ore.