A hopper (2) is provided that includes a bin (4) having an outlet (8) and being mounted on a frame (6) to be vibratable. The bin (4) has an open rectangular top (10) and is less than 2 metres in height to enable the hopper (2) to receive ore from a front-end loader in an underground working. The top (10) is covered by grizzly bars (20) and the floor (18) of the bin (4) is inclined downwardly toward the outlet (8). Two three-phase motors (34) connected to eccentric drives beneath the bin (4) serve as vibrators, and the frame (6) is collapsible for transport and storage.
