Steel Authority of India (SAIL) will invest Rs 3,000 crore to quadruple capacity of its Gua iron ore mine in Jharkhand to 10 million tonnes per annum (mtpa) and set up a 4 mtpa pelletisation plant. "This will cost the company Rs 2,087 crore. At the same time, a 4 mtpa pellet plant will also be set up with an investment of Rs 865 crore," a steel ministry source said. The official said techno-commercial discussions were in progress now for increasing the capacity at the mine and the contracts for developing the mine were likely to be finalised by October this year.