Hit by a dip in production of coal from Coal India Ltd (CIL) and gas from private sector major Reliance Industries Ltd (RIL), the mining sector is set to contract by 2.2 per cent this year. The sector grew five per cent in 2010-11. While the mining sector accounts for around three per cent of India’s gross domestic product (GDP) on a standalone basis, a dip in mineral output creates a ripple effect on major end-use industries in the key infrastructure sectors of power, steel, cement, fertiliser and oil and gas.