The value for n was 0.68, 0.84, 0.90, and 0.95 for semianthracite, low-volatile coal, high-volatile bituminous coal, and subbituminous coals, respectively. This is similar to findings by Thakur ... In noise, heat and vibration in the plant, and ... Jaw crusher: The material is crushed between a fixed jaw and a mobile jaw. The feed is subjected ...Web