how did the chasnala col mine take place
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Answer:
Incident. When a roof of coal caved in, 7 million imperial gallons (32,000 m3) of water per minute flooded into the mine. The miners were trapped under a mountain of debris and drowned when the water surged into the mine.
Location: Dhanbad, Bihar (now Jharkhand)
Cause: Water from adjacent mine gushed after the wall in between collapsed.
How does a coal mine work?
Surface coal mining generally involves the following sequence of unit operations: (1) clearing the land of trees and vegetation, (2) removing and storing the top layers of the unconsolidated soil (topsoil), (3) drilling the hard strata over the coal seam, (4) fragmenting or blasting the hard strata with explosives, (5) ...
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