Abstract: A conveyor assembly for moving particulate material such as grain on a conveyor belt. The conveyor assembly includes a tail section, one or more intermediate sections according to the needed length, and a head section. The head section contains a powered drive pulley. The tail section contains a tail pulley. An endless conveyor belt is trained between the tail pulley and the drive pulley. Each intermediate section carries at least one roller for carrying the forward run of the conveyor belt. The intermediate section rollers have a contoured, concave surface to support the conveyor belt with a dish-shaped or concave profile such that material is held on the conveyor belt and inhibited from spilling over the sides. The tail pulley is mounted in a tail pulley shroud having a funnel-shaped outlet directed toward the forward run of the conveyor belt.