Sao Hill is the largest forest project in Tanzania with 30,000 hectares planted by 1983. Its final target is 65,000 hectares. It supports a state owned sawmill and a pulp and paper mill. Managing this forest on a non-declining yield basis is the main objective. Since the forest structure is abnormal, yield regulation is necessary. A Feasibility study was conducted using the area-volume check method which is currently identified as a feasible model. It is suggested that management of this forest on the basis of non-declining yield is possible. Where computing facilities are limited this method of regulating yield may be more useful than using simple but rigid formulae.