<p>A worker fastens iron rods together at the construction site of a bridge in the outskirts of Jammu</p><p><b>In a poor performance, the eight core industries grew by 0.5% in January mainly due to slackening output of crude oil, steel, natural gas and petroleum refinery products.</b></p><p>The eight core industries, which include coal, cement, fertilisers and electricity, had recorded a growth rate of 6.4% in January 2011.</p><p><b>(Pictures by Reuters)</b></p>