Massive growth in steel sector pushes up index but coal output plummets
Main push from sharp pick-up in refinery products; barring coal, other 6 rise only marginally
Sharp pick-up in refinery products and sustained rise in coal behind growth
Sharp pick-up in coal and cement production boosts core sector growth
Sharp pick-up in refinery products and electricity generation led to the fifth straight increase in April
Pick-up in refinery products, fertilisers, cement and electricity production push up the growth