Jaw, impactor, or gyratory crushers are usually used for initial reduction. The crusher product, normally to 30 centimeters (3 to 12 inches) in diameter, and the grizzly throughs (undersize material) are discharged onto a belt conveyor and usually are conveyed to a surge pile for temporary storage or are sold as coarse aggregates. The stone from the surge pile is conveyed to a vibrating ...
