Twenty one people were killed and another 150 injured on Commercial Street in Boston’s North End when a tank of molasses ruptured and exploded on January 15, 1919. Click images for slideshow.
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A huge wave of the syrupy brown liquid moved down Commercial Street at a speed of 35 mph over two blocks destroying all in its path. In today’s dollars, the property damage is estimated at over $100 million. Purity Distilling Company built the tank, 50 feet high and 90 feet wide, in the densely populated neighborhood of mostly Italian immigrants at the time.
The disaster brought nationwide attention to the lack of industrial safety standards. Complaints of cracks and leaks in the tank were literally covered with brown paint by the company that initially said anarchists blew up the tank. Later, a lengthy class action lawsuit brought forward damaging evidence resulting in a settlement of $600,000 (~$11 million in today’s dollars). Although Purity used the molasses for industrial alcohol, some hypothesize that the tank was overfilled because of the the prohibition threat for possible use later to distill rum. Neighborhood folklore has it that you can smell the ill-sweet remains in the summer’s hottest weather. (Sources: Wikipedia, Mass Moments, Wired)