 brought on J.D. Vance. This is a Rust Belt play. J.D. Vance is a Rust Belt play. The column goes on. By 2003, there were seven mines and only 2,000 mining jobs. Did you hear that? At the beginning of the 20th century, Ohio had 1,155 coal mines with more than 50,000 coal miners. By 2003, there were seven mines, only 2,000 mining jobs.