In 1980, Wirtgen GmbH built the first surface miner. The latest machine in this product division is the large 4200 SM (Fig.), presented at bauma 2010 as a world premiere. The new 4200 SM is a high-performance machine suitable for mine operators and customers in large-scale open-cast mining wanting to make use of the benefits offered by Wirtgen’s selective mining technology that enables cutting, crushing and loading in a single working pass. The 4200 SM is available in two different configurations for operations in either hard or soft rock. A two-stage conveyor system with 1800 mm wide primary and discharge conveyors and optional discharge conveyor lengths of 12 000 mm or 16 000 mm supports the surface miner’s impressive cutting performance of up to 3000 t/h. The conveyor’s large slewing angle of 180 °, flexible height adjustment and variable conveyor belt speed ensure smooth loading of large transport trucks.
Wirtgen GmbH, Windhagen (D), Tel.: +49 2645 131-0,