Macro machines: The biggest and best mining machinery
#0183;#32;Wirtgen developed the 4200 SM surface miner in conjunction with iron producer Fortescue Metals Group (FMG) as a highperformance machine suited to the demands of the iron ore mining process. The vehicle has a cutting drum unit that is customised for the hard rock conditions prevalent in iron ore mining, although it can also be installed with a cutter for the softer rock of surface coal mining.