Abstract: A method and apparatus for use in pulverization and/or segregation which is suitable for obtaining the desired quality of the pulverized materials. Such pulverization is performed by restricting the discharge rate of the mixture through the discharge opening and thereby controlling the quantity and time the mixture remains within the pulverizer. The pulverizer is provided with a weir at the discharge end of the drum or cylinder for such restricting purpose. Also, beaters disposed within the pulverizer are provided with safety means enabling the beaters to pivot when a relatively stiff constituent is encountered in the mixture.