That wiki entry was a wild ride. It should be required reading in school.

Fermi: You’ll be dead in a year if you keep doing it like that.

Feynman: You’re tickling the tail of a sleeping dragon.

Slotin, in blue jeans and cowboy hat: Look, ma, no shims!

While attempting to stack another brick around the assembly, Daghlian accidentally dropped it onto the core and thereby caused the core to go well into supercriticality, a self-sustaining critical chain reaction. He quickly moved the brick off the assembly, but received a fatal dose of radiation. He died 25 days later from acute [radiation poisoning].

Holy shit and I’m still scared to drop shit into a pot of oil