Infrastructure sector growth declined to 3.6% in April against 5.9% in the year-ago month. Core sector growth for April 2008 declined to 3.6 per cent from 5.9 per cent in the same month last year on account of a huge fall in production of petroleum refinery products and electricity. The index comprises production data of six sectors. The index, having a weight of 26.7 per cent in the Index of Industrial Production (IIP), stood at 232.3 (provisional) in April 2008, a growth of 3.6 per cent, compared with a growth of 5.9 per cent in the year-ago month. During April-March 2007-08, the index grew 5.6 per cent (provisional), against 9.2 per cent in the corresponding period of the previous year. Crude oil Production of crude oil, which has a weight of 4.17 per cent in the IIP, registered an increase of 0.9 per cent (provisional) in April 2008, compared with 1.4 per cent in April 2007. The crude oil production registered a rise of 0.4 per cent (provisional) in April-March 2007-08, compared with 5.6 per cent during the same period of 2006-07. Petroleum refinery products Petroleum refinery production (which has a weight of 2 per cent in the IIP) grew 4.3 per cent (provisional) in April 2008, compared with 15.1 per cent in the year-ago month. It grew of 6.5 per cent (provisional) during April-March 2007-08, compared with 12.9 per cent in the same period of 2006-07. Coal Coal production (weight of 3.2 per cent in the IIP) registered an increase of 10.3 per cent (provisional) in April 2008, compared with 0.6 per cent in April 2007. Coal production grew 6.0 per cent (provisional) during April-March 2007-08, against a rise of 5.9 per cent during the same period of 2006-07. Electricity Electricity generation (weight of 10.17 per cent in the IIP) registered a growth of 1.4 per cent (provisional) in April 2008, compared with 8.7 per cent a year ago. Electricity generation grew 6.3 per cent (provisional) during the last financial year, compared with 7.3 per cent during the same period of 2006-07. Cement Cement production (weight of 1.99 per cent in the IIP) registered a rise of 6.9 per cent (provisional) in April 2008, compared with 5.8 per cent in April 2007. Cement production grew 8.1 per cent (provisional) during the last financial year, compared with an increase of 9.1 per cent during the same period of 2006-07. Finished (carbon) steel Finished (carbon) steel production (with a weight of 5.13 per cent in the IIP) registered a rise of 4.0 per cent (provisional) in April 2008, compared with 2.7 per cent (estimated) in April 2007. Finished (carbon) steel production grew 5.1 per cent (provisional) during April-March 2007-08, compared with an increase of 13.1 per cent during the same period of 2006-07.