1947 February 20 USA, California, Los Angeles, South
of Downtown, Pico Blvd./Stanford Ave.: a blast at the O'Connor
Electroplating Company destroyed/damaged more than 55 structures
in a 300-foot radius, 150 people were injured and 15 persons
perished. The incident resulted in the city's first ordinance
stipulating regulations for the storage, transportation,
production, processing, and use of hazardous chemicals and
led to one of the first Hazmat Dictionary's in the U.S.