- 3421 - Cutlery (1 Company)
- 3432 - Plumbing Fixture Fittings & Trim (5 Companies)
- 3433 - Heating Equipment, Except Electric (3 Companies)
- 3441 - Fabricated Structural Metal (5 Companies)
- 3443 - Fabricated Plate Work (Boiler Shops) (2 Companies)
- 3444 - Sheet Metalwork (10 Companies)
- 3446 - Architectural Metalwork (2 Companies)
- 3471 - Plating And Polishing (1 Company)
- 3479 - Metal Coating & Allied Services (3 Companies)
- 3498 - Fabricated Pipe & Fittings (1 Company)
- 3499 - Fabricated Metal Products (3 Companies)
- 3556 - Food Products Machinery (1 Company)
- 3565 - Packaging Machinery (1 Company)
- 3567 - Ndustrial Furnaces And Ovens (2 Companies)
- 3578 - Calculating And Accounting Equipment (13 Companies)
- 3585 - Refrigeration And Heating Equipment (1 Company)
- 3592 - Carburetors, Pistons, Rings And Valves (1 Company)
- 3599 - Industrial Machinery (15 Companies)
- 3644 - Noncurrent Carrying Wiring Devices (1 Company)
- 3661 - Telephone And Telegraph Apparatus (2 Companies)
- 3663 - Radio And Tv Communications Equipment (4 Companies)
- 3691 - Storage Batteries (2 Companies)
- 3699 - Electrical Equipment And Supplies (3 Companies)
- 3714 - Motor Vehicle Parts And Accessories (4 Companies)
- 3721 - Aircraft (1 Company)
- 3792 - Travel Trailers And Campers (1 Company)
- 3799 - Transportation Equipment (2 Companies)
- 3842 - Orthopedic , Prosthetic And Surgical Appliances An (4 Companies)
- 3911 - Jewelry, Precious Metal (2 Companies)
- 3949 - Sporting And Athletic Goods (8 Companies)
- 3993 - Signs And Advertising Specialties (19 Companies)
- 3999 - Manufacturing Industries (1 Company)
- 4011 - Railroads, Line Haul Operating (1 Company)
- 4111 - Local & Suburban Transit (8 Companies)
- 4119 - Local Passenger Transportation (22 Companies)
- 4121 - Taxicabs (5 Companies)
- 4131 - Intercity & Rural Bus Transportation (4 Companies)
- 4141 - Local Bus Charter Service (3 Companies)
- 4142 - Bus Charter Service, Except Local (3 Companies)
- 4173 - Bus Terminal & Service Facilities (1 Company)
- 4212 - Local Trucking, Without Storage (80 Companies)
- 4213 - Trucking, Except Local (73 Companies)
- 4214 - Local Trucking With Storage (15 Companies)
- 4215 - Courier Services, Except By Air (16 Companies)
- 4222 - Refrigerated Warehousing And Storage (4 Companies)
- 4225 - General Warehousing And Storage (44 Companies)
- 4226 - Special Warehousing And Storage (12 Companies)
- 4311 - U S Postal Service (36 Companies)
- 4481 - Deep Sea Passenger Transportation, Except Ferry (3 Companies)
- 4493 - Marinas (3 Companies)
- 4499 - Water Transportation Services (1 Company)
- 4512 - Air Transportation, Scheduled (2 Companies)
- 4513 - Air Courier Services (2 Companies)
- 4522 - Air Transportation, Nonscheduled (1 Company)
- 4581 - Airports, Flying Fields & Services (11 Companies)
- 4724 - Travel Agencies (15 Companies)
- 4725 - Tour Operators (1 Company)
- 4729 - Passenger Transportation Services (2 Companies)
- 4731 - Freight Transportation Arrangement (39 Companies)
- 4783 - Packing And Crating Services (5 Companies)
- 4789 - Transportation Services (5 Companies)
- 4812 - Radiotelephone Communications (66 Companies)
- 4813 - Telephone Communication Except Radio (39 Companies)
- 4832 - Radio Broadcasting Stations (21 Companies)
- 4833 - Television Broadcasting Stations (5 Companies)
- 4841 - Cable And Other Pay Television Services (27 Companies)
- 4911 - Electric Services (1 Company)
- 4925 - Gas Production And/Or Distribution (1 Company)
- 4932 - Gas And Other Services Combined (4 Companies)
- 4941 - Water Supply Systems (7 Companies)
- 4953 - Refuse Systems (31 Companies)
- 4959 - Sanitary Services (5 Companies)
- 4971 - Irrigation Systems (10 Companies)
- 5012 - Automobiles And Other Motor Vehicles (5 Companies)
- 5013 - Motor Vehicle Supplies And New Parts (32 Companies)
- 5014 - Tires And Tubes (2 Companies)
- 5015 - Motor Vehicle Parts, Used (12 Companies)
- 5021 - Furniture (2 Companies)
- 5023 - Homefurnishings (7 Companies)
- 5031 - Lumber, Plywood, Millwork & Wood Panels (4 Companies)
- 5032 - Brick, Stone And Related Material (25 Companies)
- 5039 - Construction Materials (3 Companies)
- 5044 - Office Equipment (8 Companies)
- 5045 - Computers, Peripherals And Software (3 Companies)
- 5046 - Commercial Equipment (1 Company)
- 5047 - Medical And Hospital Equipment (1 Company)
- 5049 - Professional Equipment, Nec (4 Companies)
- 5051 - Metal Service Centers And Offices (8 Companies)
- 5063 - Electrical Apparatus And Equipment (16 Companies)
- 5065 - Electronic Parts And Equipment, Nec (6 Companies)
- 5072 - Hardware (5 Companies)
- 5074 - Plumbing And Hydronic Heating Supplies (9 Companies)
- 5075 - Warm Air Heating And Air Conditioning (8 Companies)
- 5078 - Refrigeration Equipment & Supplies (13 Companies)
- 5082 - Construction And Mining Machinery (7 Companies)
- 5083 - Farm And Garden Machinery (6 Companies)
- 5084 - Industrial Machinery And Equipment (26 Companies)
- 5085 - Industrial Supplies (22 Companies)
- 5087 - Service Establishment Equipment (26 Companies)
- 5091 - Sporting And Recreational Goods (2 Companies)
