With increasing requirements@ many conveyor systems utilize dual drive arrangements to increase output. Dual drives can provide an economical solution by utilizing smaller@ more efficient@ system designs. However@ multiple drive conveyors must proportion the load between drives and load sharing without some type of control is difficult to achieve. This paper presents a case study on a failure analysis of a coal mine dual drive conveyor system that experienced gear reducer failures between 2 to 18months. Physical and metallurgical inspection of failed gearing did not indicate material or workmanship defects@ but indicated overload. In order to determine the cause of the failures@ strain gage load testing was performed. The testing of the conveyor drives revealed load sharing problems which that will be reviewed.