Fortune (5/25) has a story about a Duluth, MN startup called Magnetation. The company’s founders (now 78 and 83) have developed a process for recovering useable iron ore from the millions of tons of tailings left as waste from previous mining activities. There are millions of tons of this stuff in northern Minnesota. The Fortune story isn’t available on-line yet, but the company website is here.
Not all startups are centered around computer technology or biotech.