On 15 January 1919 a huge (50 ft. tall, 90 ft. wide with 2.3 million gallons) molasses tank burst in Boston, unleashing a tidal wave of molasses from 8 to 15 feet high traveling at 35 mph! The wave broke girders of the elevated railway, swept some buildings off their foundations and crushed others Several blocks were two to three feet deep in molasses. 150 people were injured & 21 killed, crushed or drowned by molasses. Horses were crushed. It was a terrible tragedy.