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Headquartered in Rio de Janeiro , Brazil , Vale is the world ’ s largest producer of both nickel and iron ore . It also produces kaolin , copper , potash , cobalt , ferroalloys and bauxite . The company boasted a market capitalisation of $ 40.17bn in 2017 and is one of the country ’ s largest logistics operators . In addition to its mining operations , Vale also operates an expansive network of logistics solutions comprised of ports , railroads and ships to better transport its products . www . vale . com

With a market capitalisation of $ 24.62bn as of 2017 , Coal India is a state-controlled enterprise headquartered in West Bengal , India . The company is the world ’ s largest producer of coal and contributes about 82 % of the country ’ s total coal production . It operates 81 mining areas that span eight states of the country . These are comprised of a combination of open cast , under- ground and mixed mines . www . coalindia . in SEPTEMBER 2018