The Boston Molasses Flood: As the temperature rose on January 15, 1919, something disastrous was about to happen. The earth heaved under the feet of workers as they heard the sound of ripping and tearing steel bolts accompanied by a booming roar as the bottom of the giant molasses tank split open. A geyser of yellowish-brown fluid spouted into the sky, followed by a deadly tidal wave of molasses. With a horrible hissing, sucking sound, it splashed across the street, crushing everything in its path. 21 people were found dead and countless others were injured.