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Maintenance and repair services for equipment for excavating, moving, filling and restoring earth and making underground installations-namely, trenchers, vibratory plows, front end loaders, backhoes, vacuum systems, tool carriers, earth borers and tooling for earth borers, hydraulic pipe pushers, backfiller brooms and blades, earth saws, hydraulic breakers, belt conveyors and screw conveyors, reel carriers and cable, pipe and tubing installation machines and parts therefore; planned maintenance and repair services for equipment for excavating, moving, filling and restoring earth and making underground installations