A) Construction industry and public works:
1. General contractors:
This category includes general construction firms that are primarily engaged in the construction of buildings, highways or heavy construction such as marine installations, dams, and hydro-electric plants; it excludes establishments that do some construction work but are primarily engaged in another activity such as utility operation, manufacturing, or mining.
General construction firms that are primarily engaged in the construction, alteration and repair of buildings including houses, farm buildings, public buildings, industrial and commercial buildings. This category includes general construction firms primarily engaged in speculative building.
(b) Highway, bridge and street construction:
General construction firms that are primarily engaged in the construction and repair of highways, interchanges, streets, bridges, overpasses and airports. This category excludes general construction firms and their construction sites that are primarily engaged in highway or street maintenance, such as tarring, sprinkling, filling potholes and snow removal.
(c) Other construction:
General construction firms that are primarily engaged in the construction of such projects as waterworks, gas mains, sewers, hydro-electric plants, transmission lines, telephone lines, power lines, dams, dikes, harbours and canals (including dredging), docks and piers, other marine construction, radio towers, railways and related works and other construction projects not classified elsewhere.
2. Special trade contractors:
This category includes special-trade construction firms. Special-trade contractors perform only part of the work covered by a contract taken by a general contractor. In all instances, a sub-contractor working on part of a project is classified in this category as is jobbing trade work performed directly for owners. Special-trade contractors are often engaged in repair and maintenance work, done at site, on buildings of all types. However, this category excludes maintenance or repair work done by maintenance staffs employed full time by the establishments on whose premises the work is being done, as well as special-trade construction firms primarily engaged in some other activity such as the fabrication of structural steel parts but which also erect the steel on the sites. Special-trade construction firms classified in this category include those engaged in bricklaying, carpentry, cement work, electrical work, lathing, plastering, stucco work, painting, decorating, plumbing, heating, air conditioning installations, roofing, terrazzo work, steel erection, excavating, flooring, glazing, insulation of buildings, weather stripping, demolition of buildings, water well drilling, sheet metal work, carpet laying, tiling, marble and stone work.
(1) Logging establishments
Establishments primarily engaged in felling and bucking, bunching, yarding, forwarding, decking and loading roundwood, in recovering lost logs including sinkers, in transporting wood with specialized logging trucks and in driving, booming, sorting, rafting and towing wood (if not licensed as public carriers) and barking mills engaged in producing barked or rossed pulpwood.
(2) Forestry services
Private or public establishments primarily engaged in patrolling forests in order to inspect them for the purposes of fire prevention, to fight fires, and to undertake reseeding, reforestation and other forestry services.
C) Mines, quarries and oil wells:
1. Metal mines:
(a) Placer gold mines: Establishments primarily engaged in mining gold by placer, hydraulic or other methods, including establishments primarily engaged in dressing and beneficiating the ore and in producing bullion at the site of the mine.
(b) Gold quartz mines: Establishments primarily engaged in operating lode mines for gold, including establishments primarily engaged in dressing and beneficiating the ore and in producing bullion at the site of the mine.
(c) Uranium mines: Establishments primarily engaged in mining uranium or radium ores and in dressing and beneficiating such ores.
(d) Iron mines: Establishments primarily engaged in mining iron ore and in dressing and beneficiating such ores.
(e) Miscellaneous metal mines: Establishments primarily engaged in mining metal ores not elsewhere classified and in dressing and beneficiating such ores, including the following types of mines: silver, copper-gold-silver, nickel-copper, silver-cobalt, silver-lead-zinc, molybdenite, chromite, manganese, mercury, tungsten, titanium, cerium, rare earths, columbium, tantalum, antimony, magnesium and beryllium.
2. Mineral fuels:
(a) Coal mines: Establishments primarily engaged in mining coal, whether anthracite, bituminous or lignite, including establishments which break, wash, grade or prepare coal for use as a fuel, whether operated by a coal-mining enterprise or on a contractual basis.
(b) Crude petroleum and natural gas industry: Establishments primarily engaged in the production of petroleum or natural gas from wells or from surface shales or sands, including establishments primarily engaged in recovering the naphtha content of natural gas. The products of these establishments are pentane and heavier liquids, and liquefied petroleum gases such as butane, propane and butane-propane mixtures; in some cases, elemental sulphur is recovered as a by-product. This category excludes establishments primarily engaged in manufacturing coal gas, when not combined with a blast furnace or chemical plant, and establishments primarily engaged in distributing manufactured or natural gas to consumers through a system of mains.
3. Non-metal mines (except coal mines):
(a) Asbestos mines: Establishments primarily engaged in mining and milling asbestos fibre.
(b) Peat extraction: Establishments primarily engaged in recovering and processing peat.
(c) Gypsum mines: Establishments primarily engaged in mining gypsum; this category excludes establishments primarily engaged in manufacturing gypsum products and which also mine gypsum.
(d) Miscellaneous non-metal mines: Establishments primarily engaged in mining and milling non-metallic minerals not classified elsewhere, including mines such as the following: soapstone and talc, barite, diatomite, mica, ochre and iron oxide, feldspar, nepheline syenite, quartz, silica, fluorspar, salt, potash, sodium sulphate, lithia, magnesite, brucite, gem stones, pumice, volcanic dust, whiting, pozzolana, kyanite, natro-alunite, sodium carbonate, magnesium sulphate, actinolite, serpentine, strontium, graphite, phosphate, pyrite.
4. Quarries and sand pits:
(a) Stone quarries: Establishments primarily engaged in quarrying and crushing igneous rocks (such as granite) or sedimental rocks (such as limestone, marble, shale, slate and sandstone), excluding establishments primarily engaged in cutting, shaping or finishing stone.
(b) Sand pits or gravel-pits: Establishments primarily engaged in extracting, crushing and screening sand and gravel from sand pits or gravel-pits.
5. Services incidental to mining:
(a) Contract drilling for petroleum: Establishments primarily engaged in the contractual drilling of wells for petroleum or gas, including establishments that specialize in “spudding in” or “drilling in” and in assembling, repairing and dismantling drilling rigs and derricks.
(b) Other contract drilling: Establishments primarily engaged in contractual diamond drilling.
(c) Miscellaneous services incidental to mining: Establishments primarily engaged in providing services necessary to the operation of petroleum and gas fields, such as running, cutting and pulling casings, tubes and rods; cementing wells; shooting wells; perforating well casings; acidizing and chemically treating wells; cleaning out, bailing and swabbing wells, and drilling water intake wells. This category also includes establishments primarily engaged in providing services incidental to the operation of metal and non-metal mining, such as opening up including the removal of overburden and the sinking of shafts, as well as old style prospecting, but excludes geophysics surveys, gravimetric surveys and seismographic surveys.