finished material this fourth stage is the final opportunity for this process to attain the desired volatile qualities requested of the finished product in order for a feedstock that is resistant to volatile expulsion to be brought into targeted volatile standards the high temperatures of the fourth phase will either be elevated to produce the desired results or the exposure time of the unfinished products will be increased in order to achieve the desired results it is possible for both temperature and exposure time to be adjusted in order to allow for a less cooperative feed stock to expel the excess volatile matter an objective of the present process is to reduce the percentage of volatile matter t o the desired percentage as requested by the end user which for this discussion is less than 15 by weight at this stage in the process the remaining volatile matter is generally composed of high boiling organic hydrocarbon materials occluded within the interstices of the coal pieces the amount of moisture remaining after this stage is less than 2 by weight the coal and the controlled atmosphere are moved into the fifth chamber s of the apparatus where the processed coal is cooled by exposing the coal to a dry cooling gas.