January 26, 2017
Materials supplier Tarmac has invested in a Hitachi EX1900-6 ultra-large excavator for its Swinden Quarry in North Yorkshire, England.
The EX1900-6 is used to load up to 1,200 tonnes of carboniferous limestone per hour directly into a 200tonne mobile crusher. A field conveyor takes the material to a secondary crusher at an average rate of 1,000tonnes/hour.
The Hitachi model was supplied with a longer boom and arm, and a smaller 8m³ bucket, customary on a machine of this size. “This is because it needs