Dhanbad 's a city in the state of Jharkhand, and's also known as the 'Coal Capital of India'. Dhanbad's among the top 100 fastest growing cities of world. According to 2001 census, Dhanbad's among 35 cities of India. Among the Rail Divisions of Indian Railway, Dhanbad Rail Division's in second position in terms of revenue generation. Dhanbad's famous for coal mining. Tata Steel,BCCL,ECL and IISCO are some of the companies having coal mines in the district. Coal-mining, Coal washing and coke mak… (More on Dhanbad)