However these moves were not globally copied . For example , in the United States , at least 602 people died in the Iroquois Theatre fire in Chicago in December 1903 because iron gates blocked exits . Five years later 174 people in Ohio died in the Collinwood school fire , which led to a national outcry in the U.S. for greater fire safety in buildings
Iroquois Theatre fire
Iroquois Theatre fire
Crash bar