The Instituto Costarricense de Electricidad said that some 1,200 employees in the 16-floor telecommunications tower managed to exit the building in less that 14 minutes Tuesday morning.
The state telecom company had set up a drill at the La Sabana facility.
The 45 rescue team members for the institute had more to do than just chasing people from the building. The simulation also included person injured by falls, and they had to be attended. There also was a man with a simulated heart attack, said the telecom agency. The Cuerpo de Bomberos y Cruz Roja Costarricense also participated.