True giants of mining: World's top 10 iron ore mines | MININGSep 17, 2015 . Number five is a single pit that produces 77 million tonnes of iron ore per year. . China is the leader in both steel production (50% of world total) and iron ore mining (47% of global output in terms of tonnage). China is also the biggest iron ore importer . Image courtesy of Fortescue Metals Group. Yandi.iron ore mines machneries pictures,82 best Iron Ore Mining images on Pinterest | Au, Iron ore and Wa govImages of 80 years of the industry in Australia's north-west | See more ideas about Au, Iron ore and Wa gov.