T Rigid dump trucks, Wheel Loaders and Backhoe Loaders. Excavation using a backhoe or excavator is commonly used to dig a basement. A backhoe/dipper dredger has a backhoe like on some excavators. Such applications include mining trucks, backhoe loaders, cranes, diggers, scissor lifts, etc. Volvo introduced the Model 646 four-wheel drive backhoe loader in 1977. By 1964, JCB had sold over 3,000 3C backhoe loaders. They can be equipped with a backhoe, front loader, or other contracting equipment. Tracked excavators are sometimes called "trackhoes" by analogy to the backhoe. Their Model 320 was the world's first serial backhoe loader. Case was the first company to introduce the factory-integrated backhoe loader. Several companies make backhoe attachments for skid-steers. Sometimes a backhoe bucket is reversed to work in a power shovel configuration. A backhoe dredger is equipped with a half-open shell. Removable backhoe attachments almost always have a separate seat on the attachment. Removable backhoe attachments almost always have a separate seat on the attachment itself.