July 15, 2012. India's largest coal producer Coal India Ltd (CIL) has chalked out plans to invest ' 12,500 crore over the next three years with an aim to provide the much-needed fillip to its coal production efforts. The Maharatna company, which accounts for more than 80% of the coal produced in the country, has seen its production stagnate over the last three years. Around ' 7,500 crore of the proposed investment will go towards funding Indian Railways - developing rail infrastructure including dedicated railway tracks in coal mining locations, which will subsequently be used to transport coal from hinterlands, thereby resulting in faster evacuation of coal. The company will invest the remaining ' 5,000 crore to develop its underground mining operations.