The Raniganj coalfield is the oldest coal mine in India. It was first mined in 1774. Further Reading: NCERT Notes: Geography- Some major minerals and their characteristics NCERT Notes: Geography-Physical characteristics of minerals Related Links Types of Rainfall UPSC Notes: Geography- Loss of biodiversity Hydrocarbon Exploration and Licensing Policy (HELP). IAS Toppers GS 1 Structure, Strategy and Syllabus IAS Salary