Reflecting firm recovery in industrial production, the country's six core infrastructure industries grew by a healthy 4.5 per cent in February 2010, against a meager 1.9 per cent in the year-ago period. <br/><br/>The six key sectors–crude, petroleum refinery products, coal, electricity, cement and finished steel–grew 5.3 per cent in April-February 2009-10, against 2.9 per cent in the same period last year, an official statement said today. Electricity generation grew by 7.3 per cent in February 2010, against 0.6 per cent in the year ago period. Crude oil output grew 4 per cent in February, this year, after contracting 6.2 per cent in February last year. <br/><br/>Coal production grew 6.8 per cent, against 6 per cent. Finished steel expanded 0.9 per cent, compared to 2.4 percent, and cement grew 5.8 per cent, against 8.3 per cent. And petroleum refinery products recorded expansion of 0.8 per cent, against 0.5 per cent.<br/>