SP Colton Hump Slug page
This page is dedicated to SP's fleet of Colton Hump Slugs.
Original orders:
The SP converted 3 Alco C628/C630 locomotives to slugs to use between pairs of new SD38-2's for use at the newly constructed West Colton hump yard:
SP:
| road numbers | origins | re-build date |
| SP 1000-1002 | ex SP 7121, 7115 & 7811 | mid 1973 |