- 3273 - Ready Mixed Concrete (1 Company)
- 3423 - Hand & Edge Tools (1 Company)
- 3444 - Sheet Metalwork (3 Companies)
- 3471 - Plating And Polishing (1 Company)
- 3519 - Internal Combustion Engines (2 Companies)
- 3544 - Special Dies, Tools, Jigs, And Fixtures (1 Company)
- 3545 - Machine Tool Accessories (1 Company)
- 3578 - Calculating And Accounting Equipment (2 Companies)
- 3599 - Industrial Machinery (1 Company)
- 3625 - Relays And Industrial Controls (1 Company)
- 3644 - Noncurrent Carrying Wiring Devices (1 Company)
- 3699 - Electrical Equipment And Supplies (4 Companies)
- 3714 - Motor Vehicle Parts And Accessories (3 Companies)
- 3792 - Travel Trailers And Campers (1 Company)
- 3799 - Transportation Equipment (1 Company)
- 3949 - Sporting And Athletic Goods (2 Companies)
- 3993 - Signs And Advertising Specialties (6 Companies)
- 4111 - Local & Suburban Transit (1 Company)
- 4119 - Local Passenger Transportation (5 Companies)
- 4121 - Taxicabs (1 Company)
- 4131 - Intercity & Rural Bus Transportation (1 Company)
- 4141 - Local Bus Charter Service (1 Company)
- 4142 - Bus Charter Service, Except Local (1 Company)
- 4212 - Local Trucking, Without Storage (15 Companies)
- 4213 - Trucking, Except Local (9 Companies)
- 4214 - Local Trucking With Storage (2 Companies)
- 4215 - Courier Services, Except By Air (4 Companies)
- 4225 - General Warehousing And Storage (30 Companies)
- 4226 - Special Warehousing And Storage (11 Companies)
- 4311 - U S Postal Service (15 Companies)
- 4512 - Air Transportation, Scheduled (1 Company)
- 4522 - Air Transportation, Nonscheduled (1 Company)
- 4581 - Airports, Flying Fields & Services (1 Company)
- 4612 - Crude Petroleum Pipelines (1 Company)
- 4613 - Refined Petroleum Pipelines (1 Company)
- 4619 - Pipelines (1 Company)
- 4724 - Travel Agencies (5 Companies)
- 4731 - Freight Transportation Arrangement (7 Companies)
- 4812 - Radiotelephone Communications (10 Companies)
- 4813 - Telephone Communication Except Radio (8 Companies)
- 4832 - Radio Broadcasting Stations (5 Companies)
- 4841 - Cable And Other Pay Television Services (5 Companies)
- 4911 - Electric Services (2 Companies)
- 4925 - Gas Production And/Or Distribution (6 Companies)
- 4953 - Refuse Systems (12 Companies)
- 4959 - Sanitary Services (1 Company)
- 5013 - Motor Vehicle Supplies And New Parts (7 Companies)
- 5014 - Tires And Tubes (2 Companies)
- 5015 - Motor Vehicle Parts, Used (3 Companies)
- 5023 - Homefurnishings (2 Companies)
