New Delhi: State-owned Coal India NSE 0.94 % Ltd (CIL NSE 2.27 %) on Monday said it has issued tenders for all 35 mining projects identified for mechanised transportation of dry fuel and setting up coal handling plants and silos for rapid loading at an estimated cost of Rs 12,500 crore. Under mechanised transportation, coal would be moved through piped conveyor belt mode promoting cleaner environment. With reduced movement of coal-laden trucks on roads, it brings down dust pollution to the comfort of people residing in the proximity of the mines.