Excavators caterpillar, komatsu, Liebherr, volvo or hyundai, which measure more than 20 meters and weigh more than 800 tons and are used for large scale mining work. Hydraulic excavators that are used to load large mining trucks in large scale mining jobs such as the extraction of gold and other minerals such as copper, silver, aluminum or iron.  video, please contact at: t10ytcont@gmail.com