The Eight Core Industries comprise nearly 38 % of the weight of items included in the Index of Industrial Production (IIP).  The combined Index of Eight Core Industries stands at 175.4 in October 2015, which was 3.2 % higher compared to the index of October 2014. Its cumulative growth during April to October 2015-16 was 2.5 %.

Coal: Coal production (weight: 4.38 %) increased by 6.3 % in October, 2015 over October, 2014. Its cumulative index during April to October, 2015-16 increased by 4.5 % over corresponding period of previous year.

Crude Oil: Crude Oil production (weight: 5.22 %) decreased by 2.1 % in October, 2015 over October, 2014. Its cumulative index during April to October, 2015-16 increased by 0.03 % over the corresponding period of previous year.

Natural Gas: The Natural Gas production (weight: 1.71 %) declined by 1.8 % in October, 2015. Its cumulative index during April to October, 2015-16 declined by 2.1 % over the corresponding period of previous year.

Refinery Products (93% of Crude Throughput): Petroleum Refinery production (weight: 5.94%) declined by 4.4 % in October, 2015. Its cumulative index during April to October, 2015-16 increased by 2.4 % over the corresponding period of previous year.

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