Establishments primarily engaged in manufacturing heavy machinery and equipment of a type used primarily by the construction industries, such as bulldozers; concrete mixers; cranes, except industrial plant overhead and truck-type cranes; dredging machinery; pavers; and power shovels. Also included in this industry are establishments primarily engaged in manufacturing forestry equipment and certain specialized equipment, not elsewhere classified, similar to that used by the construction industries, such as elevating platforms, ship cranes and capstans, aerial work platforms, and automobile wrecker hoists. Establishments primarily engaged in manufacturing mining equipment are classified in Industry 3532; those manufacturing well-drilling machinery are classified in Industry 3533; those manufacturing industrial plant overhead traveling cranes are classified in Industry 3536; and those manufacturing industrial truck-type cranes are classified in Industry 3537.

• Aerial work platforms, hydraulic or electric truck or carrier mounted
• Aggregate spreaders
• Asphalt plants, including travel-mix type
• Automobile wrecker hoists
• Backfillers, self-propelled
• Backhoes
• Ballast distributors (railway track equipment)
• Batching plants, bituminous
• Batching plants, for aggregate concrete and bulk cement
• Blades for graders, scrapers, dozers, and snowplows
• Breakers, paving
• Buckets, excavating: e.g., clamshell, concrete, dragline, drag scraper,
• Bulldozers, construction
• Cab, construction machinery
• Capstans, ship
• Carriers, crane
• Chip spreaders, self-propelled
• Chippers, commercial: brush, limb, and log
• Concrete buggies, powered
• Concrete grouting equipment
• Concrete gunning equipment
• Concrete plants
• Construction machinery, except mining
• Cranes, construction
• Cranes, except industrial plant
• Crushers, mineral: portable
• Derricks, except oil and gas field
• Distributors (construction machinery)
• Ditchers, ladder: vertical boom or wheel
• Dozers, tractor mounted: material moving
• Draglines, powered
• Drags, road (construction and road maintenance equipment)
• Dredging machinery
• Excavators: e.g., cable, clamshell, crane, derrick, dragline, power
• Extractors, piling
• Finishers and spreaders, construction
• Finishers, concrete and bituminous: powered
• Grader attachments, elevating
• Graders, road (construction machinery)
• Grapples: rock, wood, etc.
• Grinders, stone: portable
• Hammer mills (rock and ore crushing machines), portable
• Hammers, pile driving
• Line markers, self-propelled
• Locomotive cranes
• Log splitters
• Logging equipment
• Mixers: e.g., concrete, ore, sand, slag, plaster, mortar, bituminous
• Mortar mixers
• Mud jacks
• Pavers
• Pile driving equipment
• Planers, bituminous
• Plaster mixers
• Plows, construction: excavating and grading
• Post hole diggers, powered
• Power cranes, draglines, and shovels
• Pulverizers, stone: portable
• Railway track equipment: e.g., rail layers, ballast distributors
• Rakes, land clearing: mechanical
• Road construction and maintenance machinery
• Rock crushing machinery, portable
• Rollers, road
• Rollers, sheepsfoot and vibratory
• Sand mixers
• Scarifiers, road
• Scrapers, construction
• Screeds and screeding machines
• Screeners, portable
• Ship cranes and derricks
• Ship winches
• Shovel loaders
• Shovels, power
• Silos, cement (batch plant)
• Slag mixers
• Snowplow attachments
• Soil compactors: vibratory
• Spreaders and finishers, construction
• Subgraders, construction equipment
• Subsoiler attachments, tractor-mounts
• Surfacers, concrete grinding
• Tampers, powered
• Tamping equipment, rail
• Teeth, bucket and scarifier
• Tractors, construction
• Tractors, crawler
• Tractors, tracklaying
• Trenching machines
• Trucks, off-highway
• Vibrators for concrete construction
• Wellpoint systems
• Winches, all types
• Work platforms, elevated