Dhanbad Coal Mine Disasters (1965 and1975) - India
The Dhanbad coal mine disaster occurred on the night between 27th and 28th May. The disaster was caused by an explosion in Dhori colliery near Dhanbad, the major coal mining town in India. 375 miners were killed in the disaster.

It was a firedamp and coal dust explosion. The initial ignition was suspected to have come from the hurricane lantern of a person who entered the underground gallery. The mine's management alleged it to be an intentional act of ignition.

Ten years later on 27 December 1975, another disaster struck the Chasnala colliery, near Dhanbad. The Chasnala mining disaster killed 372 people. The coal dust explosion in the deep mine led to a blast that damaged the roof barrier with a huge water body sitting above it. Most of the deaths were because of the formidable flooding of water into the mine.