The yield of the six core infrastructure industries climbed 7.1% during January this year, backed by the strong growth of segments including crude oil, petroleum refinery products in addition to electricity.

The six core segments including crude oil, petroleum refinery products, coal, electricity, cement and finished steel flourished by 9.8% during the month of January.

In December last year, the yield of the core infrastructure segments surged 6.1%.

These core industries account for 26.68% of India's overall industrial yield.

Petroleum refinery and crude oil output zoomed 8.7% and 10.8% during the month as compared to 3.8% and 9.8%, respectively, during the same period of 2010.

Electricity production climbed up 9.3% in January from 6.4% in January last year.

But, coal production constricted by 1.2% in January from 5.4% growth during the same period last year.

Development in cement production decelerated to 1.8% in January as against 12.4% in January, 2010.

Development in finished steel construction slowed to 8.2% in January as against 16.8% in the comparable period a year ago.