On July 18, 2007, an explosion in Manhattan, New York City, sent a geyser of hot steam up from beneath a busy intersection, with a 40-story-high shower of mud and flying debris raining down on the crowded streets of Midtown Manhattan. It was caused by the failure of an 83-year-old, 24-inch (0.61 m) underground steam pipe near Grand Central Terminal, which exploded during the evening rush hour. 45 people were injured, and one woman died of a heart attack while fleeing.