Photo via Wikimedia Commons under the Creative Commons License
Due to an explosion was spontaneous combustion, 10 men were killed in the Chicago tunnel fire. Making this the worst underground disaster in Chicago history.
The Declaration • April 13, 2021 • https://thedeclarationatcoloniahigh.com/53165/today-in-history/today-in-history-april-13-1931/
Today in History – April 13, 1931