History of Michigan Thumb’s First Industry at Grindstone City

Grindstone City Title

The accidental find of the Marshal Sandstone formation in Michigan’s Upper Thumb in 1834 gave rise to one of the areas first industries. Grindstone City became famous for its production of huge grinding wheels until a disruptive technology change slid the industry into obsolescence.

Under the Radar, Michigan Visits the Thumb

Under the Radar, Michigan focuses on the best that Michigan has to offer. The thirty-minute program is broadcast regionally on PBS stations and available on-line. The host Tom Daldin guides views on the best restaurants, sites to see and interesting towns. Like Thumbwind, they want to discover and show people places and things that are unique about Michigan.

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