Abstract
Cataclysm of underground old/abandoned coal mine workings is a sudden subsidence which occur in the form of trough/discontinuous and pot-hole subsidence with extensive cracks. Rainfall, illegal mining operations and underground mine fires are the causative factors of subsidence. This paper deals with the different causative factors of subsidence and their impact on surface over old workings with precautionary measures of Jharia and Raniganj coalfields.
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