7 Construction Equipment and Machinery-Namely, Drilling Machines, Portable Water Jetting Pumps, Hydraulic Pile Drivers, Steam Pile Hammers, Steam Pile Extractors, Drop Hammers, Driving Caps for Steam and Drop Hammers, Pile Driver Guides, Barge Movers in the Nature of Skid Mounted Hydraulic Electric Winches, Construction Hoists, Gin Pole Derricks, Guy Derricks and Stiff Leg Derricks