Abstract: A media basket mill is used for dispersing a selected constituent into a liquid vehicle to produce a mixture of the constituent and the liquid vehicle and includes a basket containing a media bed of discrete media elements for immersion within a batch of the constituent and the liquid vehicle in a mixing vessel, a first impellar for establishing a first pressure differential adjacent a first end of the basket for moving the mixture along a circuit through the basket, and through the media bed in the basket, when the basket is immersed in the batch in the vessel and a second impeller for establishing a second pressure differential adjacent a second end of the basket for assisting in the movement of the mixture along the circuit into the basket and through the basket, and through the media bed in the basket, to increase the throughput of the mixture through the basket and the media bed in the basket, while deterring escape of media elements from the basket the second end of the basket.