It was around 4:30 in the afternoon on March 25, 1911. Several hundred workers, mostly young women, were nearing the end of their Saturday shift at a blouse or “shirtwaist” factory in New York City. No one is quite sure how, but a massive fire erupted and spread quickly.

The American Society for Safety Engineers (ASSE) has begun accepting nominations for the third annual Triangle Award for heroic dedication to the occupational safety and health profession. ASSE will accept nominations through April 1, 2015 and present the Triangle Award on May 6, 2015 in Washington, D.C. during its weeklong observance of North American Occupational Safety and Health (NAOSH Week).