- Radio Communications Equipment & Systems , Port Hawkesbury
- Radio Stations & Broadcasting Companies, Port Hawkesbury
- Railroad Companies, Port Hawkesbury
- Reading Instruction Schools, Port Hawkesbury
- Ready Mix Concrete, Port Hawkesbury - Concrete Suppliers, Dealers & Company
- Ready Mix Concrete Producers, Port Hawkesbury
- Real Estate, Port Hawkesbury - Agent, Broker & Companies
- Real Estate Agent & Broker Services, Port Hawkesbury
- Real Estate Broker, Port Hawkesbury
- Real Estate Developers, Port Hawkesbury
- Real Estate Services, Port Hawkesbury
- Recreational Services, Port Hawkesbury
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- Recycling Drop-Off Centers, Port Hawkesbury
- Religious Organizations, Port Hawkesbury
- Repair Services, Port Hawkesbury
- Research Services, Port Hawkesbury
- Residential, Port Hawkesbury
- Residential Apartments, Port Hawkesbury
- Residential Care Facilities, Port Hawkesbury
- Restaurants/Food & Dining, Port Hawkesbury
- Rifle & Pistol Ranges, Port Hawkesbury
- Roadside Assistance, Road Service & Towing Service, Port Hawkesbury
- Roofing Consultants, Port Hawkesbury - Roofing Companies
- Roofing Contractors, Port Hawkesbury - Roof Repair, Cleaning, Installation & Maintenance - Roofers
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