7 Equipment for excavating, moving, filling and restoring earth and making buried utility installations, namely, trenchers, vibratory plows, front end loaders, backhoes, earth boring machines, hydraulic pipe pushers, backfiller blades, power operated earth saws, power pavement saws, hydraulic breakers, drill bits for power drills, blades for power saws, reamers and backreamers for enlarging and compacting underground bore holes, adapters for downhole tools, namely, tools to connect downhole tools to drill pipe, tools for pulling pipe, cable or conduit, namely, swivels and pull tabs for attachment to drill strings on underground boring machines, reel carriers, and cable, pipe and tubing installation machines; attachments for vehicles, namely, power operated grapple and pallet forks, blades, rakes, spades, cultivators and tillers for moving earth and loose objects, earth augers, grinders, multi-purpose high pressure washers, and snow blowers; guided earth boring machines, namely, drilling rigs, hydraulic power supplies, drilling fluid mixing and handling systems comprised of pumps, hoses, pipes, storage containers and trailers sold as a unit, and mechanical mixing machines and pumps used with earth boring machines, all sold as a unit, and parts therefor