During which period were coal mines nationalised in India?

Correct option is C

The Correct Answer is C: 1971-1975.

Explanation:

• The coal mines in India were nationalized in two phases between 1971 and 1973.
• The Coking Coal Mines (Nationalization) Act, 1972, and the Coal Mines (Nationalization) Act, 1973, led to government control over coal mining.
• This move was aimed at ensuring efficient management, better safety, and increased production.

Key Points:

• Nationalization was driven by the need to boost energy security and prevent exploitation.
• Led to the formation of Coal India Limited (CIL) in 1975.
• Helped in organized coal mining and industrial development.