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I would like some help with impact Crushers.I have just purchased a quarry in South Australia and the stone is a meta silt stone with LA value of 16 -22.The quarry has a Metso LT 1213 S as a primary and secondary crusher producing Concrete Aggregates.I am concerned of the amount of work this machine is doing .Feed size is between 200mm and 400 mm .If i put a jaw as my primary and reduce feed size to a constant 150 -200 mm will this make my operation more productive and save on maintenance costs of the Impactor.