PEPCON disaster
1988 CE.
Shown on the map at 36.037°, -115.035°.
On May 4, 1988, a fire followed by several explosions occurred at the Pacific Engineering and Production Company of Nevada (PEPCON) chemical plant in Henderson, Nevada, United States. The disaster caused two fatalities, 372 injuries, and an estimated $100 million of damage. A large portion of the Las Vegas Valley within a 10-mile (16 km) radius of the plant was affected and several agencies activated disaster plans.
Text from the Wikipedia article PEPCON disaster, licensed CC BY-SA 4.0.