Abstract: An apparatus for continuous aerobic processing of waste material to convert it completely into usable compost without the aid of inoculums. This apparatus consists of a drum which revolves about a fixed hollow shaft to which three vanes are affixed. One of these vanes is octahedral and the other two are tetrahedral in shape. They are positioned in such a way as to deflect waste material from the center to the ends of the container and from the ends to the center of the container. Within the central vane is the remote sensor of a dial thermometer, used to monitor the temperature inside the pile of waste material.