Physical storage and retrieval installations, including racks, controlled stock cabinets, automated warehouses and archives, roll and baggage stores, bulk silos, bins and storage hoppers. Includes integrated storage systems with their retrieval machinery and interfaces. Short flow accumulation integral to a conveyor follows conveying, empty-pallet magazines follow pallet handling, and movable load carriers follow the load-carrier family. General workplace furniture and process pressure vessels remain outside this scope.