#CuriousMinnesota

Mining created these Lake Superior black sand beaches. One’s a tourist destination, the other a Superfund site. Operations left behind uniquely colored beaches in Minnesota’s Silver Bay and Michigan’s Gay. But the materials are different.

NRRI researcher Matt Mlinar offers some background on MN iron mining for #CuriousMinnesota www.startribune.com/black-beach-silver-bay-l...