- Machine Shop & Tool Repair Service, Collinsville
- Machinery And Equipment Manufacturers, Collinsville
- Machinery, Supplies & Equipment - Business Supplies Related, Collinsville
- Machinery, Supplies & Equipment - Construction & Contractor Related, Collinsville
- Major Appliances, Collinsville - Household & Kitchen
- Management Consultants & Services, Collinsville
- Manufacturers Agents & Representatives, Collinsville
- Manufacturers Representative, Collinsville - Reps, Independent Sales Representative, Sales Agent, etc
- Manufacturing, Collinsville
- Marine Contractors & Designers, Collinsville
- Mass Transit Vehicle Dealers, Collinsville
- Mennonite Church, Collinsville
- Methodist Church, Collinsville
- Mexican Restaurants, Collinsville
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- Mining, Collinsville
- Ministries Church, Collinsville
- Mirrors, Collinsville - Custom, Framed, Bathroom, Vanity & Wall Mirrors
- Miscellaneous Government, Collinsville
- Miscellaneous Manufacturing, Collinsville
- Miscellaneous Personal Services, Collinsville
- Mobile Home Parks & Communities , Collinsville
- Monuments, Tombstones, Markers & Memorials, Collinsville
- Mortgage Bankers & Correspondents, Collinsville
- Motor Vehicle, Collinsville
- Motor Vehicle Rental & Leasing, Collinsville
- Moving Supplies & Equipment Rental, Collinsville
- Moving Truck Rental , Collinsville
- Muffler Shop & Exhaust Systems, Collinsville
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