Clean Harbors Inc is an environmental, energy and industrial services provider. It provides part cleaning and related environmental services to commercial, industrial and automotive customers. Its business segments are Technical services, Industrial services, Field services, Safety-Kleen, Oil and Gas field services and Lodging services. It derives key revenue from the Technical services and Safety-Kleen services. The Technical Services segment provides hazardous material management services like packaging, collection, transportation, treatment, and disposal of hazardous and non-hazardous waste. The safety-kleen segment provides environmental services like parts cleaning, containerized waste services, used oil collection and others.