About Dhanbad
Dhanbad is a city in the Indian state of Jharkhand.[4] It is the second most populated city in Jharkhand. Dhanbad along with its adjacent urban areas ranks 42nd in population amongst other cities in India. It has been ranked 94th as per Ease of Living Index rankings. Dhanbad shares its land borders with Asansol, West Bengal. Dhanbad has some of the largest coal mines in India[6] and is called Coal Capital of India. Tata Steel, Bharat Coking Coal Limited (BCCL), Eastern Coalfields Limited (ECL) and Indian Iron And Steel Company (IISCO) are some of the companies who operate coal mines in the district. The engineering institute IIT (ISM), Dhanbad is located in Dhanbad.
Source : Wikipedia