Crushers NEW & USED - GrinderCrusherScreenFeb 28, 2017 . Jaw, Impact, and Cone Crushers for rock, concrete, and more. New Beyer and Red Rhino models in addition to many used make and model. . representative): Complete primary and secondary portable crushing spreads with.used secondary crusher,P&Q University Lesson 7- Crushing & Secondary Breaking | Pit .Aug 5, 2015 . Most secondary crushers are cone crushers or horizontal-shaft impact . Cone crushers are used in secondary, tertiary and quaternary stages.