Sentinels of Safety (1938)
Вставка
- Опубліковано 4 вер 2024
- Educational film by the London, Midland and Scottish Railway about absolute block working. This version has a digitally restored audio track to remove some of the hiss and boost the bass (as a result it is near silent until about 40 seconds in).
This film is public domain in the United Kingdom and United States.