Answer:
(i) The dust and noxious fumes inhaled by miners make them vulnerable to pulmonary diseases. (ii) The risk of collapsing mine roofs, inundation and fires in coal mines are a constant threat to miners. (iii) The water sources in the regions get contaminated due to mining. (iv) Dumping of waste and slurry leads to degradation of land, soil and increase in stream and river pollution. Stricter safety regulations and implementation of environmental laws are essential to prevent mining from becoming a 'killer industry'.
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