Dhanbad is a city in Jharkhand.
The coalfields around Dhanbad are known as Jharia coalfields. It covers an area of around 448 sq km, the total reserve of coal is estimated at 5,000 million tonnes. Jharia coalfields are the only source of coking or metallurgical coal in the country. There are 112 coal mines in the district. Jharia town adjacent to Dhanbad is considered a separate town administratively. Munidih Colliery is the Largest Colliery in India. ONGC is using CBM(Coal Beded Methane) for Producing Electricity at many places of Dhanbad. TATA POWER along with DVC is setting up 1050 MW Thermal power plant in Dhanbad. It has chemical plants, other industries, and produces Mica and many different minerals.