CLH vs WM

Clean Harbors Inc.

Clean Harbors, Inc. provides environmental and industrial services in North America. The company operates through two segments, Environmental Services and Safety-Kleen. The Environmental Services segment collects, transports, treats, and disposes hazardous and non-hazardous waste, such as resource recovery, physical treatment, fuel blending, incineration, landfill disposal, wastewater treatment, lab chemicals disposal, and explosives management services; and CleanPack services, which comprise collection, identification, categorization, specialized packaging, transportation, and disposal of laboratory chemicals and household hazardous waste. This segment also provides industrial maintenance and specialty industrial services, and utilizes specialty equipment and resources that performs field services. The Safety-Kleen segment offers specially designed parts washers; automotive and industrial cleaning products, such as antifreeze, windshield washer fluid, degreasers, glass and floor cleaners, hand cleaners, absorbents, mats, and spill kits; pickup and transportation services for hazardous and non-hazardous containerized waste for recycling or disposal; and vacuum services to remove solids, residual oily water and sludge, and other fluids from customers oil/water separators, sumps, and collection tanks, as well as remove and collect waste fluids found at metal fabricators, auto maintenance providers, and general manufacturers. This segment also manufactures, formulates, packages, distributes, and markets lubricants; and provides containerized waste, vac services, used motor oil collection, and contract blending and packaging services. Clean Harbors, Inc. was founded in 1980 and is headquartered in Norwell, Massachusetts.

Waste Management Inc.

Waste Management, Inc., through its subsidiaries, provides waste management environmental services to residential, commercial, industrial, and municipal customers in North America. It offers collection services, including picking up and transporting waste and recyclable materials from where it was generated to a transfer station, material recovery facility (MRF), or disposal site; and owns, develops, and operates landfill gas-to-energy facilities in the United States, as well as owns and operates transfer stations. As of December 31, 2020, the company owned or operated 263 solid waste landfills; 5 secure hazardous waste landfills; 103 MRFs; and 348 transfer stations. It also provides materials processing and commodities recycling services; recycling brokerage services, such as managing the marketing of recyclable materials for third parties; and other strategic business solutions. In addition, the company offers construction and remediation services; services related with the disposal of fly ash, and residue generated from the combustion of coal and other fuel stocks; in-plant services comprising full-service waste management solutions and consulting services; and specialized disposal services for oil and gas exploration and production operations. The company was formerly known as USA Waste Services, Inc. and changed its name to Waste Management, Inc. in 1998. Waste Management, Inc. was incorporated in 1987 and is headquartered in Houston, Texas.