17th September 1862: Explosion at the Allegheny Arsenal in Pennsylvania sees the largest single civilian loss of life during the American Civil War

Published: Sept. 17, 2023, 2:05 a.m.

b'More than 1,100 people worked at the Arsenal, 78 of whom died while many more were injured.More than 1,100 people worked at the Arsenal, 78 of whom died while many more were ...'