Marlborough Cement Factory, MI
The little towns sprung up where the resources they sought were at. My little 150 person burg was considerably larger in the late 1800s due to a railroad that ran through here. My house sits on the spot where the icehouse was. Even my yard is largely underlaid with cobblestones that made it easy to slide blocks of ice from the lake.
Michigan Ghost towns. I know the list is considerably longer than what is listed. I can think of at least a half dozen from my corner of Jackson county alone.
http://www.ghosttowns.com/states/mi/mi.html
Yeah, it's made of cement, alright. What did they manufacture? *<];-')
Here's a potash plant at Antioch, (now a ghost town) Nebraska: "The Potash Capital of Nebraska". There were several of these in the Sandhills region that were built when Germany cut off trade in the run up to WWI. After the War to End Wars, they all closed down. Easily visible along the highway, east of Alliance...famous for Carhenge.
We saw them on a back-roads trip, and had to do some digging on the Net to finds out what the ruins were.