coal mining subsidence raniganj pdf

  • Coal mining - Wikipedia

    Coal mining is the process of extracting coal from the ground. Coal is valued for its energy content, and, since the 1880s, has been widely used to generate electricity. Steel and cement industries use coal as a fuel for extraction of ...

  • Jharia - Wikipedia

    Jharia is a neighbourhood in Dhanbad in Jharkhand state, India. Jharia was the fifteenth-largest town in the state of Jharkhand. (More than one town in India shares this name.) Jharia is famous for its rich coal resources, used to make coke