- Radio Stations & Broadcasting Companies, Newcastle
- Radiotelephone Communications, Newcastle
- Ready Mix Concrete, Newcastle - Concrete Suppliers, Dealers & Company
- Ready Mix Concrete Producers, Newcastle
- Real Estate, Newcastle - Agent, Broker & Companies
- Real Estate Developers, Newcastle
- Real Estate Services, Newcastle
- Recreational Equipment & Supplies Companies, Newcastle
- Refrigerator Sales, Service & Repair, Newcastle - Fridge
- Refuse Collection & Disposal Services, Newcastle
- Refuse Systems & Garbage Disposal, Newcastle
- Rehabilitation Centers, Products & Services, Newcastle
- Rehabilitation Specialists, Newcastle
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- Religious Organizations, Newcastle
- Repair Services, Newcastle
- Residential, Newcastle
- Residential Apartments, Newcastle
- Residential Construction Contractors, Newcastle - General Contractors
- Restaurants/Food & Dining, Newcastle
- Road Construction, Newcastle - Companies & Contractors
- Rock Shops, Newcastle
- Roofing Consultants, Newcastle - Roofing Companies
- Roofing Contractors, Newcastle - Roof Repair, Cleaning, Installation & Maintenance - Roofers
- RV & Campers Repair & Service, Newcastle
- RV Repair, Newcastle - Recreational Vehicle
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