The Wall Street bombing, as the event is now known, occured just after noon on Thursday, September 16, 1920. A wagon loaded with a bomb containing dynamite and 500 pounds of small iron weights parked in front of 23 Wall Street. The corner building was then the headquarters of J.P. Morgan & Co., the nation's most powerful bank. At 12:01 pm, the timer on the bomb reached zero and a terrific explosion rocked the street.
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