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A self-propelled machine, with a structure designed for excavation or land clearance, by means of a blade which moves towards it, and is fixed to a rotating, horizontal superstructure.
It digs below ground level in such a way that the bucket moves towards the machine, lifting, balancing and unloading materials while stationary.
It consists of a wheeled frame, tracks, rails or platform; an articulated arm, an excavation bucket and an engine for the propulsion and activation of the hydraulic system.
It may feature a load blade at the front, which loads up or digs by means of forward movement.