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The original was posted on /r/todayilearned by /u/poop-machines on 2024-08-23 21:19:32+00:00.

Original Title: TIL that in 1858, poisoned candy killed 20 people in Bradford, England, and sickened 200 more, when a sweets manufacturer accidentally adultered his sweets with arsenic instead of gypsum (the latter of which was used at the time as a bulking agent and adulterant)