Analysis of sawmill waste charring process in the steel retorts. There is described the process of sawmill waste charring in the steel retorts that belong to the contractor operating in Forest Inspectorate Kozienice. The process consists of nine stages and lasts over 76 hours, including 14 h (19%) of the effective charring, 47 h (62%) of cooling the retorts, and the remaining 15 h for cleaning, loading and unloading of the retort. The economic analysis for the assumed data showed that average specific cost of obtaining a 2.5-kg bag of charcoal made of sawmill waste was equal to about 5 PLN, while the limit profitability point, calculated for the process with the use of a new retort, amounted to 87 bags of charcoal, and with the depreciated retort – 67 bags.