A gas explosion at the

On October 31, 1963, a gas explosion occurred at the Indiana State Fairgrounds Coliseum in Indianapolis, United States, killing 81 people and injuring about 400 others. It was one of the worst disasters in the history of the state.

The Corteva Coliseum is a 6,500-seat indoor multi-use arena, located on the Indiana State Fairgrounds in Indianapolis. It was originally called the Indiana State Fairgrounds Coliseum and later the Pepsi Coliseum, Fairgrounds Coliseum, and Indiana Farmers Coliseum.