- Machine Shop & Tool Repair Service, Saltville
- Machinery, Supplies & Equipment - Business Supplies Related, Saltville
- Machinery, Supplies & Equipment - Construction & Contractor Related, Saltville
- Mail Delivery Service, Saltville
- Major Appliances, Saltville - Household & Kitchen
- Manufacturing, Saltville
- Massage Therapy, Saltville
- Mental Health Specialists, Saltville - Psychologist, Psychiatrist, Psychotherapist, etc
- Methodist Church, Saltville
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- Mining Equipment & Supplies, Saltville
- Miscellaneous Government, Saltville
- Monuments, Tombstones, Markers & Memorials, Saltville
- Mortgages & Loans, Saltville
- Motor Vehicle, Saltville
- Motor Vehicle Rental & Leasing, Saltville
- Moving Truck Rental , Saltville
- Museums, Saltville
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