New Delhi, July 29 -- As economic growth concerns loom, India's latest industrial production data won't do anything to lift the spirits of policymakers. Government numbers released on Monday showed the index of industrial production grew a weak 1.5% in June from a year earlier, slipping from May's revised 1.9% expansion.

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Mining and electricity were big drags, with their output declining 8.7% and 2.6%, respectively. While heavy rainfall may have played a role in that, since it tends to reduce power demand and slow mining activity, the negative readings can't be explained by rain alone.

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