B PERFORMING OPERATIONS; TRANSPORTING
B65 CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
B65G TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
65/00 Loading or unloading
B65G65/28 Piling or unpiling loose materials in bulk, e.g. coal, manure, timber, not otherwise provided for