The top five companies covered are Rio Tinto Plc, Vale SA, BHP Billiton Ltd., Fortescue Metals Group Ltd. and Barrick Gold Corp. Rio Tinto was the largest company in the metal ore mining market. To know more visit: https://www.thebusinessresearchcompany.com/report/metal-ore-mining-market-global-briefing-2018 To download the sample: https://www.thebusinessresearchcompany.com/sample.aspx?id=610&type=smp