CR
| Conrail | 1 |
CSX
| CSX Railroad | 1 |
GBRX
| Greenbrier Leasing Corporation | 1 |
GRCX
| Granite Rock Company | 12 |
HBWX
| Georgia Power Company | 1 |
HYWX
| Georgia Power Company | 2 |
LN
| Louisville & Nashville | 1 |
MP
| Missouri Pacific | 1 |
NS
| Norfolk Southern | 2 |
NW
| Norfolk & Western | 1 |
RSWX
| RSWX | 1 |
RWSX
| Scherer Electric Generating Facility (Ala.) | 8 |
SOU
| Southern | 1 |
SP
| Southern Pacific | 11 |