The film is based on the events surrounding the Lengede mining accident in 1963.
| Actor | Role |
|---|---|
 Heino FerchFranz Wolbert | Franz Wolbert |
 Heike MakatschRenate Reger | Renate Reger |
 Jan Josef LiefersBruno Reger | Bruno Reger |
 Nadja UhlHelga Wolbert | Helga Wolbert |
 Armin RohdeJürgen Grabowski | Jürgen Grabowski |
 Sylvester GrothHarald Hansen | Harald Hansen |
 Günther Maria HalmerDr. Heiner Dietz | Dr. Heiner Dietz |
 Thomas HeinzeRudolf Schönfeld | Rudolf Schönfeld |
 Axel PrahlErwin | Erwin |
 Benjamin SadlerSalvatore di Pietro | Salvatore di Pietro |
 Gustav Peter WöhlerDr. Schleip | Dr. Schleip |
 Klaus J. BehrendtPit Spieker | Pit Spieker |
 Christian KahrmannAlbin | Albin |
 Gilbert von SohlernPfarrer | Pfarrer |