- Machine Shop & Tool Repair Service, Bridgeville
- Machinery, Supplies & Equipment - Business Production Related, Bridgeville
- Machinery, Supplies & Equipment - Business Supplies Related, Bridgeville
- Machinery, Supplies & Equipment - Construction & Contractor Related, Bridgeville
- Malls & Shopping Centers, Bridgeville
- Manicurists & Pedicurists, Bridgeville
- Manufacturing, Bridgeville
- Masonry Contractors, Bridgeville - Stone Mason, Brick Mason - Install & Repair
- Masonry Materials & Supplies, Bridgeville
- Mechanical Contractors, Bridgeville - Install, Service & Repair
- Mennonite Church, Bridgeville
- Mental Health Specialists, Bridgeville - Psychologist, Psychiatrist, Psychotherapist, etc
- Methodist Church, Bridgeville
- Mini & Self Storage, Bridgeville
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- Mining, Bridgeville
- Miscellaneous Government, Bridgeville
- Miscellaneous Industry, Bridgeville
- Miscellaneous Personal Services, Bridgeville
- Mortgage Bankers & Correspondents, Bridgeville
- Motor Vehicle, Bridgeville
- Motor Vehicle Rental & Leasing, Bridgeville
- Motorcycle & Motor Scooters Dealers, Repair & Service, Bridgeville
- Motorcycle Repair & Service, Bridgeville
- Moving & Storage Supplies & Equipment, Bridgeville
- Moving Companies, Bridgeville
- Moving Truck Rental , Bridgeville
- Musical Instruments Repair, Sales & Service, Bridgeville
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