a split of the plus and minus 1 1/2 inch material is again made. Oversize from the 5/8 x 1 1/4 inch screens is crushed by a 5 x 84 inch Allis Chalmers hydracone tertiary crusher having a normal closed side Discharge from the tertiary crusher joins the setting of 1/2 inch. scalping screen undersize and secondary crusher discharge thereby con—