Grousers are commonly used on construction vehicles such as bulldozers, loaders, and excavators. A backhoe/dipper dredger has a backhoe like on some excavators. These were equipped with 175 trucks, 65 cranes, 55 excavators and 13 bulldozers. In the initial stage dozens of excavators, bulldozers and other earth-moving equipment prepared the ground. Luzhou is a manufacturing center of hydraulic trucks, cranes and excavators in China. Collaboration with Hitachi Construction Machinery for the manufacture of Hydraulic Excavators. A crusher bucket is an attachment for hydraulic excavators. Next, large machines, such as dragline excavators or bucket wheel excavators, extract the mineral. Analysis of parrotfish feeding biology describes three functional groups&colon; excavators, scrapers and browsers. Modern hydraulic excavators come in a wide variety of sizes. In 1954, Demag developed their first hydraulic excavators. Examples of vehicles using continuous track are tanks, snowmobiles and excavators. The farmers then dig up the Foxes' burrow using spades and then excavators. Mechanical devices such as flails and excavators are sometimes used to clear mines. The smaller ones are called mini or compact excavators.