Clean Harbors

Clean Harbors is a provider of environmental and industrial services in North America and the largest hazardous waste disposal company on the continent. Founded in 1980 in suburban Boston with a single Mack truck and four employees, the firm has grown into a publicly traded company listed on the NYSE under the ticker CLH, operating more than 400 service locations and over 100 disposal facilities across the United States, Canada, Mexico and Puerto Rico.

The company's work spans hazardous and non-hazardous waste management, emergency spill response, industrial cleaning and maintenance, tank cleaning, solvent recycling and closed-loop recycling and reclamation. Waste services cover the collection, transportation, treatment and disposal of hazardous and non-hazardous material. Through its Safety-Kleen subsidiary, Clean Harbors delivers closed-loop solutions for recycling, reclaiming and reusing used oil and cleaning solvents; it is the largest re-refiner of used oil in North America.

Clean Harbors serves customers in the chemical, manufacturing, energy, government, healthcare, refinery, transportation, utilities and pharmaceuticals industries, and counts a majority of Fortune 500 companies among its clients. Technical work is concentrated in hazardous waste management and disposal, used oil re-refining, industrial cleaning and maintenance, and emergency spill response.

The company traces its origins to founder Alan S. McKim, who started the business at the age of 24 with an ambition to build a meaningful enterprise in environmental services. It has since expanded from a small tank cleaning operation into a continent-leading public company, with an emphasis on innovation, proven methodology and responsible, closed-loop recycling.