SP 1
| narrow gauge, to Minera de Cananea 61-8 in 1961 |
50Tonner
| 32266 | 1 | 212264 |
SP 9
| narrow gauge BLW 11/1909 as NCO 9, to SP 9 in 09/1929 |
4-6-0
| 34035 | 1 | 89865 |
SP 18
| narrow gauge BLW 12/1911 as NCO 12, to SP 18 in 05/1928 |
4-6-0
| 37395 | 1 | 89866 |
SP 2371
| blt 1/56 as 1573 retired 10/73 |
H-12-44
| 12L977 | 1 | 143972 |
SP 2881
| ex-SP 3710, SP 5874 |
GP9
| 25633 | 1 | 166895 |
SP 2963
| |
RSD12
| 83843 | 1 | 168259 |
SP 3028
| SP Class H-24-66. |
H-24-66
| 24L805 | 1 | 181178 |
SP 3143
| blt #7809, downgraded 2/20/73 |
C630
| 3439-10 | 1 | 134058 |
SP 3381
| ex-SP 3465. SP 5632 - rebuilt 04/73 |
GP9R
| 21325 | 1 | 166896 |
SP 6048
| |
E9A
| 20097 | 1 | 165870 |
SP 7015
| blt with parts from trade-in RSD5 5338 |
RSD12
| 83845 | 1 | 165682 |
SP 7201
| |
GP40X
| 766016-2 | 1 | 57319 |