A bull-pressed oil mill is a type of oil mill that uses bulls to press oil seeds and extract oil. This traditional method of oil extraction has been used in many parts of the world, including India and Africa, for centuries.

To operate a bull-driven oil mill, a set of bulls is harnessed to a large wooden or metal press. The bulls are trained to walk in circles, turning the press and crushing the oil seeds as they go. The crushed seeds are then collected and placed in a container, where the oil is extracted through a process called solvent extraction.

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