Back in the 1990s, a tourist attraction named Ironworld U.S.A. was a popular stop in Chisholm, Minnesota. It had a teepee, a goofy-looking dinosaur, and a train ride along the rim of an open-pit mine “to enjoy the scenic wonder of an open-pit mine,” according to its brochure. It wasn’t technically accurate (cartoon dinosaurs rarely … Continue reading Ironworld Loses Its Mettle