On the morning of 6 December 1917, the French cargo ship SS Mont-Blanc and the Norwegian vessel SS Imo collided in the harbour of Halifax, Nova Scotia, Canada. Laden with high explosives, Mont-Blanc c
The pyrocumulus cloud produced by the explosion
Looking north from a grain elevator towards Acadia Sugar Refinery, c. 1900, showing the area later devastated by the 1917 explosion
Blast cloud of the explosion
A view across the devastation of Halifax two days after the explosion, looking toward the Dartmouth side of the harbour: Imo is visible aground on the far side of the harbour.
There have been many extremely large explosions, accidental and intentional, caused by modern high explosives, boiling liquid expanding vapour explosions, older explosives such as gunpowder, volatile
Halifax Explosion
…Halifax and Dartmouth, were killed by the blast, debris, fires, or collapsed buildings, and an estimated 9,000 others were injured. The blast was the largest human-made explosion at the time. It released the equivalent energy of roughly 2.9 kilotons of TNT (12 TJ). Mont-Blanc was under orders from the French government to carry…
Painting of the aftermath of the Delft explosion by Egbert van der Poel
A cropped interior view of Fort Fisher from the northeast angle showing the site of the reserve powder magazine that exploded.
The hole created by the Braamfontein dynamite explosion (looking west) at Maraisburg on 19 February 1896
HMS Queen Mary explodes during the Battle of Jutland