0:00 On January fifteenth, 1919, a twenty-five-foot-tall wave moving at thirty-five miles per hour hit the North End of Boston.0:08 And it wasn't water.0:09 It was molasses.0:10 Last week, in Episode 128, we talked about how learning to read the invisible currents of the Atlantic unlocked the Age of Discovery.0:19 This is a story about what happens when you willfully ignore the warning signs of a very different, and much stickier, kind of current.0:28 The tank belonged to the Purity Distilling Company.0:32 It was fifty feet tall, ninety feet across, and held over two million gallons of molasses.0:38 Now, why so much molasses in Boston?0:40 Because it was the key ingredient in industrial alcohol, and industrial alcohol was the key ingredient in munitions for World War One.0:49 The war had just ended, but the demand was still sky-high, and even more importantly, national Prohibition was just a year away.0:58 The company was trying to produce as much rum as possible before it became illegal.1:04 They were in a HURRY.1:05 So they built this tank fast.1:07 Too fast.1:08 From the day it was filled, it leaked.1:10 The company's solution wasn't to drain it and fix it.1:14 No.1:14 They just painted the whole tank a dark brown to hide the stains.1:18 Local kids would literally bring cups and pails to collect the sweet, sticky drips from the seams.1:25 The tank groaned and shuddered so loudly that people living nearby complained constantly.1:31 The company ignored them.1:33 And then came the physics.1:35 January fifteenth was unseasonably warm.1:37 A ship had just delivered a huge cargo of cold molasses from the Caribbean into the tank, which already held older, warmer molasses.1:46 That temperature difference kicked off fermentation, which produces carbon dioxide gas.1:52 So now you have a poorly built, overfilled tank, with gas pressure building inside, and the steel itself warming and expanding in the freakish winter heat.2:03 It wasn't a storage tank anymore.2:05 It was a bomb.2:06 At around twelve-thirty PM, witnesses heard a sound like a machine gun—the rivets popping off the steel plates one by one—followed by a deep, ground-shaking roar.2:17 The tank just… disintegrated.2:19 And two-point-three million gallons of molasses, weighing thirteen thousand tons, was suddenly free.2:26 This wasn't a slow ooze.2:27 This was a hydraulic weapon.2:29 The initial wave was so powerful it snapped the steel supports of the elevated railway like they were toothpicks.2:37 It picked up a freight car and threw it into a building.2:41 It flattened warehouses and crushed the houses at the base of the tank, killing people inside before they even knew what was happening.2:50 Twenty-one people died.2:51 One hundred and fifty were injured.2:54 Horses were stuck in the viscous tide, drowning.2:57 Rescuers trying to reach victims found themselves trapped, the molasses acting like quicksand.3:03 Here's the part that really gets me.3:06 After the initial wave passed, the cold air turned the molasses into a thick, inescapable glue.3:12 It took four days to find the last of the bodies.3:15 The cleanup took weeks, using salt water from the harbor to break down the sugar and wash it away.3:22 But it never really went away.3:24 For decades—DECADES—Bostonians swore that on hot summer days, the North End still smelled faintly of molasses.3:32 A ghost of a smell from a ghost of a disaster.3:35 And here's where we ask the question: Where have we seen this before?3:39 The company, of course, had an immediate explanation.3:43 Anarchists.3:44 They claimed a bomb must have been planted to blow up the tank.3:48 It’s the classic playbook, right?3:50 When your own negligence causes a catastrophe, blame an external, shadowy enemy.3:56 We saw it with the financial crisis, with environmental disasters… the pattern is always the same: deny, deflect, delay.4:04 But this time, it didn't work.4:06 The resulting lawsuit was one of the first in American history to rely heavily on expert testimony.4:12 Engineers, architects, and metallurgists were brought in.4:16 They tested the steel.4:18 They calculated the stresses.4:20 They proved, beyond any doubt, that the tank was criminally under-designed.4:25 It was too thin, it wasn't tested, and it was built by people who didn't know what they were doing.4:32 The company was found liable, and the case set a massive precedent.4:36 From then on, architects and engineers had to show their work.4:40 They had to sign off on their plans.4:43 Public safety regulations for construction got a spine, right there, born from a river of sugar.4:49 So the analogy to other corporate disasters holds, but it also breaks in a crucial way.4:55 This wasn't just another story of corporate malfeasance.4:59 This was the one that helped write the rules to prevent the next one.5:04 The real disaster wasn't the wave of molasses.5:07 It was the quiet, persistent decision to paint over the leak instead of fixing the tank.5:13 It was the thousand tiny moments of choosing profit over prudence, of ignoring the groaning sounds a system makes right before it fails.5:22 The flood was just the inevitable, sticky consequence.
