Going from memory is always risky for me, I may have mis-remembered both the date and location of the incident. I have some notes regarding a letter of 30 August 1830, Lt. Whiteley/Chief of Ordnance, written at Washington Arsenal, regarding Colt's tin foil cartridges. I'll look for the letter using that information, hopefully I'll find it, and hopefully it is the letter describing the cannon accident.
The fact that I can't find the letter is bothersome, so if anyone has the letter or has seen it, please let me know so I can cease and desist.
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