LIEBHERR 312 vs. hazel

Cleaning up backyard with a Liebherr 312 wheeled excavator. Excavators are heavy construction equipments consisting of a boom, dipper (or stick), bucket and cab on a rotating platform called house. The house sits atop an undercarriage with tracks or wheels. They are a natural progression from the steam shovels and often mistakenly called power shovels. All movement and functions of a hydraulic excavator are accomplished through the use of hydraulic fluid, with hydraulic cylinders and hydraulic motors. Due to the linear actuation of hydraulic cylinders, their mode of operation is fundamentally different from cable-operated excavators which use winches and steel ropes to accomplish the movements.
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