Koderma-Hazaribagh industrial area is famous for mining of

Solution (By Examveda Team)

Koderma district of Jharkhand state has been famous worldwide for mica minning, specially for ruby mica. The district had the monopoly in producing mica for years and the mica was exported to many countries worldwide. The main reserve of mica is found under the forest of wild life sanctuary of Koderma.