Statistics for occurrence #1 of “Fort Wagner” in year 1863, month November, day 1 of Rebellion Record: a Diary of American Events, Diary from December 17, 1860 - April 30, 1864:
... hours--the shots averaged four per minute.
The firing was from two monitors--two heavy and two light rifled guns at Fort Gregg, four ten-inch mortars at the middle battery, and four rifled guns at Fort Wagner .
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