December 31, 1987
The Occupational Safety and Health Administration adopts a grain handling facilities standard to protect 155,000 workers at nearly 24,000 grain elevators from the risk of fire and explosion from highly combustible grain dust. [Photo: A spark ignited the dust inside a 1.8 million pound capacity grain silo at the Robin Hood Flour Mill in Davenport, Iowa, causing a massive explosion in May 1975.]