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TIL that at the Hoover dam construction the first worker death was that of J. G. Tierney and the last death was that of his son Patrick Tierney which came 14 years after the death of his father

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R5k5a TIL Paul Winchell was a comedian/ventriloquist who invented one of the earliest artificial hearts. Winchell also invented a flameless cigarette lighter, a garter belt without visible lines, and owned over 30 patents.
ADwdg Today I learned that 15th April is celebrated as "World Art Day" as it is the birthday of the famous sculptor, inventor and painter, Leonardo Da Vinci.
Ma18 TIL when F. Scott Fitzgerald died, he thought he was a failure, and his work forever forgotten. His novel, The Great Gatsby, was reviewed poorly and had only sold 20,000 copies. It’s now considered the greatest novel in American history, and sells over 500,000 copies per year.
R5n76 TIL that vinyl chloride was used as a propellant in aerosols, such as hair spray, in the 1960s and '70s.
M7OKB TIL margarine was illegal in Wisconsin until 1967. Before that, Wisconsinites would sometimes smuggle in margarine from the south.