[1] Manufacturing.
[2] Mining and quarrying; manufacturing and construction (varies slightly).
[3] Wholesale and retail trade.
[4] Community, social and personal services, financing, insurance, real estate and business services, tranportation, communication and storage, wholesale and retail trade.
[5] Large industrial. Mining and quarrying; electricity, gas and water; construction.
[6] Large-non-industrial.Transportation,communication and storage;financing,insurance and real estate; community, social, personal and business service.