CRUSHING 2. GYRATORY CRUSHERS had a receiving opening of 21 x 48 in. with a three-arm spider and The original patent for the gyratory crusher was granted to Phile- a ...
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...Crushing gyratory crushers had a receiving opening of x in with three arm spider and the original patent for crusher was granted to phile two tus w gates this fint used by buffalo steam shovel began change entire picture open pit quarrying as result use shovels around cement co at time these early were developed crushen all mining either underground or done openings built thus it can be seen that hand tonnages generally small product specifications basic prior world war i simple liberal likewise plants demands improvement internal combustion engine pneumatic tires created new set operating wnditions sizes practically nonexistent mines using shrinkage stoping mine addition substantial amounts labor available capacity material handling limiting size largest equipment not suited piece feed rate improved resulted more large run ore cable ways belt con tremendous veyon transporting crushed mill limited increase off road haul trucks rail primary per hour also increased turn century no wnnect...