Timeline for SBRR-4
| Date | Event |
|---|---|
| 1911 | State Belt #4 is built by Vulcan Iron Works, Wilkes Barre, Pennsylvania |
| Feb 1932 | State Belt #4 is sold for $1,500 to Modesto & Empire Traction |
| 11/13/95 | First day of work at Salt Lake City |
| Dec. 1995 | Locomotive #4 arrives at the naval shipyard |
| 1997 | brazing cylinder repair |
| October 1997 | Heating cylinder casting |
| September 8, 1999 | Cylinder repair |