However , these moves were not globally copied for some time . For example , in the United States , 146 factory workers died in the Triangle Shirtwaist Factory fire in 1911 when they were stopped by locked exits , and 492 people died in the Cocoanut Grove fire in a Boston nightclub in 1942 . This led to regulations requiring that exits of large buildings open outward , and that enough emergency exits be provided to accommodate the building 's capacity
Cocoanut Grove fire
Cocoanut Grove fire
Emergency exit