PROTECTING SURFACES AGAINST CORROSION, ABRASION AND THE LIKE THROUGH THE APPLICATION OF COATINGS OF SPRAYED RUBBER AND PLASTIC MATERIALS; SAND BLASTING OF SURFACES TO PREPARE SAME FOR METAL SPRAYING, RUBBER LINING, PLASTIC MATERIAL COATINGS AND FOR OTHER PURPOSES; CONCRETE DEMOLITION; AND THE RENTAL OF CONSTRUCTION EQUIPMENT-NAMELY, PORTABLE COMPRESSORS, CRANES, SHOVELS, PUMPS, AND AIR TOOLS