St. Louis, Iron Mountain and Southern Railway
No. 635, seen here in 2016 after preservation. | |
| Overview | |
|---|---|
| Headquarters | St. Louis, Missouri |
| Reporting mark | SLOT |
| Locale | United States |
| Dates of operation | 1856–1917 |
| Successor | Missouri Pacific Railroad |
| Technical | |
| Track gauge | 4 ft 8+1⁄2 in (1,435 mm) standard gauge |
| Other | |
| Website | slimrr |
The St. Louis, Iron Mountain and Southern Railway (reporting mark SLOT), commonly known as the Iron Mountain, was an American railway company that operated from 1856 until 1917 when it was merged into the Missouri Pacific Railroad.