A film about winter railroading in the Canadian Rockies and the men who keep the lines clear. The stretch between Revelstoke and Field, British Columbia, is a snow-choked threat to communications. The film shows the work of section hands, maintenance men, train crews and telegraph operators.
| Directing | Guy L. Corte | Director |
| Sound | Robert Fleming | Music |
| Crew | Guy L. Coté | Script |
| Editing | Guy L. Coté | Editor |
| Production | Tom Daly | Executive Producer |
| Camera | John Spotton | Director of Photography |
| Sound | George Croll | Sound |
| Sound | Stuart Baker | Sound Editor |
| Visual Effects | Sidney Goldsmith | Animation |
