#7 Steamship Sultana Explosion
| Place | Archangel, RUSSIA |
| Date | February 20, 1917 |
| Killings | Estimated number killed 1,547 |
| Reason | The Ship named Sultana, used to make recurrent journeys up and down the Mississippi canal between New Orleans and St. Louis during the war, often carrying military personnel. This is observed as the worst maritime disaster in the American History. During one trip the ship’s boiler exploded on Sultana a paddle steamer. |
#6 Hamont Station Explosion
| Place | BELGIUM |
| Date | August 3, 1918 |
| Killings | Estimated number killed 1,750 |
| Reason | Train carrying ammunition at the Hamount Station got triggered and caught fire resulting in massive destruction. |
#5 Halifax Explosion
| Place | Halifax, NOVA SCOTIA |
| Date | December 6, 1917 |
| Killings | Estimated number killed 1,963 |
| Reason | The SS Mont Blanc, a French freight vessel, laden with wartime explosives, which fortuitously crashed with the Norwegian SS Imo resulting in a massive devastation of the Canadian City of Halifax. |
#4 Lanchow Explosion
| Place | Lanchow, CHINA |
| Date | October 26, 1935 |
| Killings | Estimated number killed 2,000 |
| Reason | Researchers and investigators haven’t yet declared the original cause of the explosion however the accounts suggest that the explosion was started from and catalyzed by an arsenal fire. |
