Clean Harbors

Clean Harbors is North America's largest hazardous waste disposal company and a leading provider of environmental and industrial services. Founded in 1980, the publicly traded firm (NYSE: CLH) operates from more than 400 service locations and over 100 disposal facilities across the United States, Canada, Mexico, and Puerto Rico. Its customer base spans major industries including chemical, manufacturing, energy, healthcare, refining, pharmaceuticals, and government, with a significant share of Fortune 500 companies among its clients.

The company's services encompass comprehensive hazardous and non-hazardous waste management, emergency spill response, industrial cleaning and maintenance, and recycling. Its Safety-Kleen subsidiary focuses on closed-loop solutions for recycling, reclaiming, and reusing used oil and cleaning solvents. Clean Harbors has grown from a single Mack truck and four employees at its founding into a continent-spanning operation built on problem-solving and operational methodology.