1. May 1, 1900: Scofield/Winter Quarters mine explosion; killed at least 200 miners.
2. March 8, 1924: Castle Gate mine explosion in Carbon County; killed 172 miners.3. Oct. 24, 1947: United Airlines DC-6 caught fire and crashed at Bryce Canyon; 52 people killed.
4. Dec. 31, 1944: The second section of an express train collided with the rear of the stalled first section at Bagley, 18 miles west of Ogden; 48 people killed.
5. Nov. 11, 1965: United Airlines 727 crashed and burned at Salt Lake airport; 43 people killed.
6. Feb. 17, 1926: Avalanche of snow, rocks and timber in Bingham Canyon; 75 people buried, 40 killed.
7. Dec. 19, 1984: Fire at Wilberg Mine in Emery County; 27 miners killed.
8. Dec. 1, 1938: Freight train hit school bus at 10600 S. 300 West; 23 Jordan High School students killed.