One of the greatest and heaviest mining machines of all time is presented by Liebherr. This machinery is known as R-9800 Mining Excavator. Evaluated at 800 tonne of service weight the — 9800 provides an ostensible bucket efficiency and capacity of 38 to 42 cubic meters at a material density of 1,8 tonne/cubic meters. This new era of Liebherr mining excavators range is focusing on bucket loads of 75 tonne in both variants, as a backhoe and a shovel execution. http://bit.ly/1rmS9H3
