- Machine Shop & Tool Repair Service, West St Paul
- Machine Tools , West St Paul
- Machinery And Equipment Manufacturers, West St Paul
- Machinery, Supplies & Equipment - Business Production Related, West St Paul
- Machinery, Supplies & Equipment - Business Supplies Related, West St Paul
- Machinery, Supplies & Equipment - Construction & Contractor Related, West St Paul
- Management Consultants & Services, West St Paul
- Manufacturing, West St Paul
- Manufacturing Products, West St Paul
- Marine Supplies & Equipment, West St Paul - Boat Supplies
- Masonry Contractors, West St Paul - Stone Mason, Brick Mason - Install & Repair
- Masonry Materials & Supplies, West St Paul
- Mausoleums Developers, West St Paul
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- Meat Market, Wholesale & Products, West St Paul
- Membership Sports & Recreation Clubs, West St Paul
- Metal Buildings, West St Paul - Kits, Homes, Steel Buildings, etc
- Metal Repair Service & Blacksmith, West St Paul - Iron Works
- Millwrights, West St Paul
- Mini & Self Storage, West St Paul
- Mining Equipment & Supplies, West St Paul
- Miscellaneous Industry, West St Paul
- Monuments, Tombstones, Markers & Memorials, West St Paul
- Motor Vehicle, West St Paul
- Motorcycle Parts, Accessories & Dealers, West St Paul
- Moving Companies, West St Paul
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