"The production of coal has been constrained ... consumption of coal during 2013-14 was 739.42 MT against the supply of 571 MT. The gap between total consumption and domestic supply has been met through import of coal to the extent of 168.44 MT," Coal and Power Minister Piyush Goyal told Rajya Sabha in a written reply.
Goyal said output has been constrained on account of difficulties in land acquisition, delays in green nods and lack of rail infrastructure for evacuation of coal.
In reply to another query, he said the number of coal mines in operation in the country is 566 which includes non-producing blocks too.
As per Geological Survey of India, total coal resources in the country has been assessed at 301.56 billion tonnes on April 1.
