On January 15, 1919, Boston’s North End witnessed a catastrophic industrial failure as 2.3 million gallons of molasses burst from a poorly built tank. The sticky wave caused widespread destruction, claiming 21 lives, injuring 150, and leaving a lasting imprint on history.

BulletsIn

• On Jan 15, 1919, a molasses tank exploded in Boston’s North End.
• The tank released 2.3M gallons of molasses at 35 mph.
• Flood caused 21 deaths, 150 injuries, and massive property damage.
• Buildings were knocked off foundations; pedestrians and horses trapped.
• Tank had known leaks; substandard materials caused structural failure.
• Thermal expansion from warm molasses shipment triggered the explosion.
• Purity Distilling Co. found negligent; ordered to pay $1M in damages.
• The disaster led to stricter construction and safety regulations.
• Cleanup took months; the smell of molasses lingered for years.
• Event serves as a cautionary tale of corporate negligence and poor engineering.