states, seven Canadian provinces, Mexico and Puerto Rico. Headquartered in Norwell, Massachusetts, Clean Harbors has more than 175 locations, including over 50 waste management facilities, throughout North America in 36 U.S. Exploration Services provide exploration and directional boring services to the energy sector serving oil and gas exploration, production, and power generation. Industrial Services provide industrial and specialty services, such as high-pressure and chemical cleaning, catalyst handling, decoking, material processing and industrial lodging services to refineries, chemical plants, pulp and paper mills, and other industrial facilities. Within Clean Harbors Energy and Industrial Services, the Company offers Industrial Services and Exploration Services. Field Services provide a wide variety of environmental cleanup services on customer sites or other locations on a scheduled or emergency response basis. Technical Services provide a broad range of hazardous material management and disposal services including the collection, packaging, transportation, recycling, treatment and disposal of hazardous and non-hazardous waste. Within Clean Harbors Environmental Services, the Company offers Technical Services and Field Services.

The Company serves over 50,000 customers, including a majority of the Fortune 500 companies, thousands of smaller private entities and numerous federal, state, provincial and local governmental agencies. Clean Harbors is the leading provider of environmental, energy and industrial services throughout North America.

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