Original: On January 20, 2006, an explosion occurred in the underground Carola-Agustina copper mine in CopiapÃ, Chile, after two trucks collided, covering the only escape route for the miners inside the mine.
Simplified: On January 20, 2006, an explosion occurred in the underground copper mine of Carola-Agustina in CopiapÃ, Chile, shortly after two trucks collided, covering the only escape route for the miners inside the mine.