US Department of Labor

“ Mining operations are classified, by industry, on the basis of the principal mineral produced, or, if there is no production, on the basis of the principal mineral for which exploration or development work is in process. The mining of culm banks, ore dumps, and tailing piles is classified as mining according to the principal mineral product derived. ”

“ If the total value of sales for agricultural products of an establishment is less than 50 percent from a single four-digit industry, but 50 percent or more of the value of sales for its agricultural products derives from the products of two or more four-digit industries within the same three-digit industry group, the establishment is classified in the miscellaneous industry of that industry group; otherwise, it is classified as a general livestock farm in Industry 0291. ”

“ When a landowner has one or more tenants, renters, croppers, or managers, the land operated by each is considered a farm.
The classification of agricultural services includes establishments primarily engaged in supplying soil preparation services, crop services, landscape and horticultural services, veterinary and other animal services, and farm labor and management services. ”

“ The establishments classified in this division furnish services to the general public or to other business enterprises; establishments which furnish similar services only to other establishments of the same enterprise are classified as auxiliary to the establishments or units of the enterprise which they serve. However, separate establishments primarily engaged in long-distance trucking, stevedoring, water transportation, or pipeline transportation are classified according to their activity and not as auxiliaries, even though they serve only establishments of the same enterprise. ”

“ The materials processed by manufacturing establishments include products of agriculture, forestry, fishing, mining, and quarrying as well as products of other manufacturing establishments. The new product of a manufacturing establishment may be finished in the sense that it is ready for utilization or consumption, or it may be semifinished to become a raw material for an establishment engaged in further manufacturing. ”

“ Finance, Insurance, And Real Estate This division includes establishments operating primarily in the fields of finance, insurance, and real estate. Finance includes depository institutions, non-depository credit institutions, holding (but not predominantly operating) companies, other investment companies, brokers and dealers in securities and commodity contracts, and security and commodity exchanges. Insurance covers carriers of all types of insurance, and insurance agents and brokers. Real estate includes owners, lessors, lessees, buyers, sellers, agents, and developers of real estate. ”

“ Most repair activities are classified as Services. However, some repair activity such as shipbuilding and boatbuilding and repair, the rebuilding of machinery and equipment on a factory basis, and machine shop repair are classified as manufacturing. ”

“ Manufacturing The manufacturing division includes establishments engaged in the mechanical or chemical transformation of materials or substances into new products. These establishments are usually described as plants, factories, or mills and characteristically use power driven machines and materials handling equipment. Establishments engaged in assembling component parts of manufactured products are also considered manufacturing if the new product is neither a structure nor other fixed improvement. ”

“ In addition to selling, functions frequently performed by wholesale establishments include maintaining inventories of goods; extending credit; physically assembling, sorting, and grading goods in large lots ”

“ Mining And Quarrying Of Nonmetallic Minerals, Except Fuels This major group includes establishments primarily engaged in mining or quarrying, developing mines, or exploring for nonmetallic minerals, except fuels. ”

“ When performed by operators of the properties, exploration under preliminary phases of operation should be classified according to the type of ore expected to be found. Exploration performed on a contract or fee basis is classified in Industry 1081. ”

“ For example, the product of the copper smelter is the raw material used in electrolytic refineries; refined copper is the raw material used by copper wire mills; and copper wire is the raw material used by certain electrical equipment manufacturers. ”

“ Industry Group 091: Commercial Fishing 0912 Finfish 0913 Shellfish 0919 Miscellaneous Marine Products Industry Group 092: Fish Hatcheries And Preserves 0921 Fish Hatcheries and Preserves Industry Group 097: Hunting And Trapping, And Game Propagation 0971 Hunting and Trapping, and Game Propagation This text is taken from the Standard Industry Classification 1987 (index) . ”

“ Major Group 91: Executive, Legislative, And General Government, Except Finance This major group includes offices of executives, legislative bodies, and general government offices, not elsewhere classified. ”

“ Mining. The dressing and beneficiating of ores; the breaking, washing, and grading of coal; the crushing and breaking of stone; and the crushing, grinding, or otherwise preparing of sand, gravel, and nonmetallic chemical and fertilizer minerals other than barite are classified in Mining. ”