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January 26, 2007
Mining in Northern Minnesota
I took my family on this trip to a mine near my hometown in northern Minnesota. My family has several generations of miners, including my father, who led us on the tour. It's always nice to be reminded of your roots.
This particular mine, is owned by Cleveland-Cliffs. The large spinning drums are used much like a rock tumbler. Eventually you'll get a fine dust that is made into a pellet, which is then shipped to the steel mills for processing. The size of the nuts holding the plating onto the mill are a bit larger than a softball. I always wondered if any have ever flown off the mill.
Posted by Paul at January 26, 2007 02:45 PM Posted to technology
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