7 AUTOMATED WAREHOUSING AND MATERIAL HANDLING SYSTEMS COMPRISING STACKER-RETRIEVERS, RACK ENTRY VEHICLES, STORAGE RACKS, CONVEYORS, MACHINES FOR MATERIALS HANDLING, FLOOR TRACKS LASER POSITIONING, EMERGENCY STOP SAFETY BUMPERS, AUTOMATIC CONTROLS AND ONBOARD BACKUP MANUAL CONTROLS FOR RAW, IN-PROCESS AND FINISHED GOODS PRODUCTION, STORAGE, RETRIEVAL AND SHIPPING