A jaw crusher functions by the movement of a retractable plate toward and away from a stationary plate. The plates are set at an angle inside of a vertical channel. When material to be crushed is loaded onto the channel, the movable plate moves back and forth, crushing the objects as it moves forward and releasing crushed objects down out of the channel as it retracts. Because the plates are positioned at an angle, jaw crushing is a multi-phase crushing process. Large materials are partially crushed at the top of the vertical channel, and they move lower as they are broken apart. By its nature, jaw crushing is a somewhat imprecise crushing process and cannot generate the fine-grained crushed objects that other crushing processes can. For example, hammermills and grinding mills involve turning crushing tools that crush and grind objects over and over until they become small, granulated particles. However, jaw crushing is often not used for processing very small materials. If properly paired with an application, jaw crushing can be a valuable and efficient crushing method.