The story of the Santa María School massacre of miners in 1907.
| Directing | Humberto Solás | Director |
| Writing | Humberto Solás | Writer |
| Writing | Orlando Rojas | Writer |
| Writing | Patricio Manns | Writer |
| Writing | Jorge Herrera | Writer |
| Writing | Alberto Santana | Writer |
| Writing | Manuel Payan | Writer |
| Production | Orlando de la Huerta | Producer |
| Sound | Leo Brouwer | Music |
| Crew | Jorge Herrera | Cinematography |
| Editing | Nelson Rodríguez | Editor |
| Art | Luis Lacosta | Production Design |
| Costume & Make-Up | Carmen Rondon | Costume Design |
| Costume & Make-Up | Guillermo López | Hairstylist |
| Costume & Make-Up | Magaly Pompa | Makeup Artist |
| Directing | Lázaro Buría | Assistant Director |
| Directing | Orlando Rojas | First Assistant Director |
| Sound | Ricardo Istueta | Sound |
| Production | Camilo Vives | Producer |