This Government-commissioned documentary was intended to reflect the modernisation of French industry. However, in Franju’s hands it became an ode to fire and a fascinating portrayal of industrial architecture.
| Crew | Marcel Fradetal | Cinematography |
| Writing | Georges Franju | Writer |
| Directing | Georges Franju | Director |
| Sound | Joseph Kosma | Music |
| Editing | André Joseph | Editor |