Explanation:

Most of the Coal in India is Bituminous and Lignite and Anthracite is rarely found.
Since nationalization of the sector in 1970s, Coal India Ltd (CIL) and its associates had monopoly over mining and selling of coal. It accounts for over 80% of the country’s coal supply. Remaining comes from another public sector firm, Singareni Collieries Company, and some captive coal mines allotted to private players for specific end-uses such as in the steel and power industries.
The Supreme Court had in 2014 cancelled 204 coal blocks allocated to various state and private companies. Following this, Coal Mines (Special Provisions) Act, 2015 was enacted to replace administrative allocation of coal blocks with auction and allotment.
This also opened up commercial coal mining in theory to private entities In 2016, coal blocks were awarded to state-controlled mining corporations for commercial mining.
Now, government has allowed all private entities to enter into commercial mining without end use or price restrictions.