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| 238130 | 4520 | * | roof truss installation, wood foundation and structure contractors (framing contractors) | |
| 238140 | 4520 | * | block, brick, and concrete block laying; building foundation (brick, block, stone) contractors; brick chimneys and fireplaces; marble slate, granite and other stone setting; masonry repair, such as pointing and caulking | |
| | 4540 | * | stucco contractors, glass block installation | |
| 238150 | 4540 | * | glass and mirror installation | |
| 238160 | 4520 | * | installation of roofing materials on flat or sloped roofs. Includes asphaltic or fiberglass shingles, shakes, corrugated roof panels, membranes, hot asphalt and other roofing systems including roof painting. | |
| 238170 | 4520 | * | installation of gutters, downspouts, fascia, soffit, and flashing, installation of wood, metal, vinyl, and other siding materials | |
| 238190 | 4520 | * | erecting and dismantling forms for poured concrete, metal curtain wall installation, on-site welding | |
| | 4530 | * | awning installation, ornamental metal work, such as railings (functional items), shutter installation | |
| | 4540 | * | ornamental metal work installation and decorative steel and wrought iron work installation | |
| 238210 | 4530 | * | electrical wiring and low voltage wiring, such as telecommunications, cable TV, home automation, audio system computer network and similar, airport runway lighting; highway, street, bridge lighting and electrical signals; traffic signal installation | |
| 238220 | 2914 | * | industrial furnace installation, repair and maintenance of furnaces and other heating equipment | |
| | 4520 | * | installation of cooling towers and other industrial or commercial cooling equipment, chimney liner installation | |
| | 4530 | * | industrial boiler repair and installation, electrical heating systems contractors, household boiler repair and installation, plumbing contractors, HVAC contractors; fire sprinkler system and lawn sprinkler system installation; heating and cooling duct installation | |
| | 7493 | * | boiler chipping, cleaning, and scaling | |
| 238290 | 2915 | * | installation of materials handling equipment in buildings | |
| | 3313 | * | assembly and installation of machinery in production lines | |
| | 3694 | * | bowling alley and equipment installation | |
| | 4530 | * | installation of elevators and escalators, lightning protection equipment, household antennas including residential satellite dishes, and building equipment such as conveyors, gasoline station equipment (pumps, lifts), central vacuum cleaning systems, etc., boiler and pipe insulation, duct insulation, service station pumps, installation and repair | |
| | 4540 | * | overhead door (commercial and industrial type) installation, automated door installation, revolving door installation | |
| 238310 | 4530 | * | soundproofing and building insulation contractors (wall cavity, attic, for example) | |
| | 4540 | * | drywall installation and finishing contractors, plastering contractors including fresco contractors, lathing contractors, drop ceiling installation on metal structures, installation of acoustic tiles and panels | |
| 238320 | 4540 | * | wallpaper hanging and removal, interior and exterior painting; bridge painting, and painting of other civil engineering structures | |
| 238330 | 4540 | * | laying of carpeting, linoleum, and hardwood (includes refinishing and resurfacing). Selling and installation by a building materials dealer is retail, sale and installation by a construction contractor is construction. | |
| 238340 | 4540 | * | interior installation of tile, stone, marble, granite, slate, mosaic, and terrazzo floor and wall covering | |
| 238350 | 3511 | * | ship joinery | |
| | 4540 | * | door and window frame construction; prefabricated door and window installation, paneling installation, prefabricated cabinet installation, garage door installation, millwork installation; on site fabrication of cabinets, includes skylight installation | |
| 238390 | 3610 | * | modular furniture attachment and installation, partition installation, laboratory equipment furniture installation | |
| | 4530 | * | waterproofing and damp proofing contractors | |
| | 4540 | * | window shade and blind installation, countertop and cabinet, metal (except residential), installation; moveable or demountable partition installation, modular office furniture installation contractors, bathtub refinishing, installation of custom sheet metal work or fabrication on site | |
| 238910 | 4510 | * | core drilling and test boring for construction, demolition of buildings and other structures, excavation and grading, earth moving, trenching (except underwater), blasting, dewatering contractors [assume this is draining building sites and agricultural and forestry land], and land clearing, core drilling and test boring for construction | |
| | 4520 | * | pile driving, building foundation; foundation digging and drilling, septic tank and cess pool installation | |
| | 4550 | * | construction equipment rental with operator, (except cranes) | |
| 238990 | 4520 | * | interlocking block walkways, driveways, patios, etc., steeplejack work; lifting work (lifting work is contracted for rather than an hourly rate for the crane operator); house moving contractors | |
| | 4530 | * | fence installation, sign erection, billboard erection, flag pole installation | |
| | 4540 | * | sandblasting building exteriors; private outdoor swimming pool construction | |
| | 4550 | * | crane rental, with operator | |
| 311111 | 1533 | * | dog and cat food manufacturing | |
| 311119 | 1531 | * | custom grinding grain | |
| | 1533 | * | farm animal feeds, pet (except dog and cat) food and specialty foods, such as worm food and fish food | |
| 311211 | 1513 | * | potato flour | |
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