Showing Scoop Feed End of Hardinge Tri-Cone Mills Immediately Available: Hardinge Tri-Cone Ball Mills (2) 9'x6'x8' Conical (8'x72") Tri-Cone Scoop Feed Continuous Ball Mills. Serial Numbers 3345 & 3214.  Hardinge/Metso.  Last used for zinc ore. Excellent liners and gears.  Required HP 225 Minimum, 300 Max.  RPM 18.2 to 23.8. Mill Weight: 37,100 LB Each.  Liners: 29,000 LB per mill. Ball Weight: 44,000 per mill (balls not included).  Mill maximum weight: 56,600 each. Call for inspection at Johnson City, Tennessee, USA location.