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a. A primary crusher designed to reduce large rocks or ores to sizes
capable of being handled by any of the secondary crushers.
Enam. Dict.
b. A crushing machine consisting of a moving jaw, hinged at one end, which
swings toward and away from a stationary jaw in a regular oscillatory
cycle. ACSG, 2
c. A machine for reducing the size of materials by impact or crushing
between a fixed plate and an oscillating plate, or between two oscillating
plates, forming a tapered jaw. Syn: jaw breaker
Source:
Dictionary of Mining, Mineral, and Related Terms
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