<h1>India's Core Industries Growth Slows to 5.3% in May 2011, Down from 7.4% in 2010.</h1> The Index of Eight Core Industries in India, which contributes 37.90% to the Index of Industrial Production, recorded a growth of 5.3% in May 2011, down from 7.4% in May 2010. From April to May 2011-12, the growth was 4.9%, compared to 7.9% in the previous year. Coal and crude oil production increased, while natural gas production declined significantly. Petroleum refinery products, fertilizers, and electricity generation saw moderate growth. Steel production growth slowed, and cement production experienced a decline. These figures indicate a mixed performance across different sectors during this period.