Canadian National Railways

Booster units

260 first of 23 HBU-4 boosters built new by GM-DD. 129 tons 49 feet 10/1978

Booster 312 ex B-12 nee 8454 rebuilt 5/1966

7604_312_7602 Winnipeg October 1971 Roger Puta/Marty Bernard Collection

8459 with B-4 booster (slug) rebuilt 7/1964 from S-3 8465.

S-13 8622_B-4_8609