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The original was posted on /r/todayilearned by /u/No_Sign6616 on 2025-06-23 12:43:10+00:00.

Original Title: TIL after the 1904 PS General Slocum fire that resulted in 957 deaths, “It was discovered that Nonpareil Cork Works, supplier of cork materials to manufacturers of life preservers, placed 8 oz (230 g) iron bars inside the cork materials to meet minimum content requirements.”