- Eastern Orthodox Church, Clairton
- Education, Clairton
- Electrical Control Systems & Materials, Clairton
- Electricians, Clairton - Electrical Contractors
- Electronics Components, Clairton
- Electronics Manufacturers, Clairton
- Electronics Repair & Maintenance , Clairton
- Electronics Stores, Clairton
- Elementary Schools, Clairton
- Emergency Services, Clairton
- Endocrinologists, Clairton - Endocrinology, Diabetes & Metabolism Doctors, Physicians & Surgeons
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- Engineer & Architect Services, Clairton - Engineering & Architecture Service
- Entertainers & Entertainment Groups, Clairton
- Entertainers & Groups, Clairton
- Entertainment & Recreation, Clairton
- Entertainment Agencies & Bureaus, Clairton
- Entertainment Services, Clairton
- Environmental Conservation & Ecological Services, Clairton - Ecosystem Services
- Environmental Products, Clairton
- Environmental Services, Clairton
- European Cuisine, Clairton
- Excavation Contractors, Clairton - Excavating - Excavator Companies
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