Just FYI for those who care, the term "rust belt" has nothing to do with where they salt the roads in the winter. Not trying to be a smart-ass.
"The Rust Belt is a colloquial term used to describe the geographic region stretching from New York through the Midwest that was once dominated by the coal industry, steel production, and manufacturing. The Rust Belt became an industrial hub due to its proximity to the Great Lakes, canals, and rivers, which allowed companies to access raw materials and ship out finished products.
The region received the name “Rust Belt” in the late 1970s, after a sharp decline in industrial work left many factories abandoned and desolate, causing increased rust from exposure to the elements. It is also referred to as the Manufacturing Belt and the Factory Belt."