Iron Mines in Michigan NASA Earth Observatory
Aug 27, 2014 . . and then use magnets or flotation techniques to separate the iron minerals out from the . Iron rich powder is then mixed with water and clay into a slurry that is shaped into pellets, heated, dried, and shipped to steel mills.
How Metals are Mined . Cooperative Extension Service
In many cases the ore is hauled in large trucks, but in some mines the ore is crushed . different kinds of ore, generally the mill starts by grinding ore into a powder. . In the case of gold, electrical processes are used to precipitate the gold from.Get Price