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Alexco Resource Corp. engages in the mineral exploration, evaluation, development, and operational activities primarily in Yukon Territory, Canada. The company explores for silver, lead, zinc, and gold deposits. It owns interests in the majority of the historic Keno Hill Silver District project that comprises the Flame & Moth, Bermingham, Lucky Queen, Bellekeno, and Onek deposits, as well as 722 quartz mining leases, 873 quartz claims, 24 placer mining claims, 1 quartz mining license and 50% of 3 quartz mining leases, 2 crown grants, and 6 fee simple lots and 7 surface leases located in Yukon Territory. Alexco Resource Corp. was incorporated in 2004 and is headquartered in Vancouver, Canada. As of September 7, 2022, Alexco Resource Corp. operates as a subsidiary of Hecla Mining Company.

NRC Group Holdings Corp. provides various environmental, compliance, and waste management services. The company operates through four segments: Domestic Environmental Services, Sprint, Domestic Standby Services, and International Services. It provides industrial cleaning, hazardous waste packaging and management, waste transportation and disposal, salvage support, petroleum storage tank cleaning and removal, pipeline repair, land and marine based emergency response, specialized equipment rental, site remediation, and marine cleaning and marine services. The company also offers spill containment and site remediation; safety monitoring and management; transportation and disposal; and equipment cleaning and maintenance services, as well as rents tanks, pumps, and containment. In addition, it operates waste disposal facility that services the oil and gas waste streams, including oil and water based drill cuttings and muds; tank bottom sediment and produced frac sands; contaminated soils; gels, cements, or other liquids that contains solids; and other production related waste products. In addition, it provides commercial standby oil spill compliance services; and industrial and drainage services. The company primarily offers its services to the oil and gas, chemical, industrial, and marine transportation markets in North America; Latin America and Caribbean; Europe, Middle East, and Africa; and the Asia Pacific. NRC Group Holdings Corp. is headquartered in Great River, New York.

Tervita Corporation operates as an environmentally focused waste service provider in Canada and the United States. It operates through two segments, Energy Services and Industrial Services. The Energy Services segment treats, recovers, and disposes fluids; provides oil terminalling and energy marketing services; processes and disposes solid materials; disposes oilfield-generated waste; offers onsite services using centrifugation or other processes for heavy oil producers involved in mining and in situ production; and purchases and sells oil volumes with treatment, recovery, terminalling, and disposal services. The Industrial Services segment provides site remediation, facility decommissioning, water treatment, sludge and slurry management, bio-remediation and technologies, technical, environmental liability management, emergency response, and rail services, as well as hazardous and non-hazardous waste management, and disposal services. This segment also offers recycling services that include purchase and processing of ferrous and non-ferrous metals recovered from demolition sites and other locations. As of December 31, 2020, the company operated 103 active waste processing, disposal, and industrial facilities, including 44 treatment, recovery, and disposal facilities; eight stand-alone disposal wells; three cavern disposal facilities; eight onsite facilities; 22 engineered landfills; three transfer stations; one naturally occurring radioactive material facility; nine bioremediation facilities; and five metals recycling facilities. It serves oil and gas industry, and industrial and natural resource sectors. The company was formerly known as CCS Corporation and changed its name to Tervita Corporation in March 2012. Tervita Corporation was founded in 1979 and is headquartered in Calgary, Canada.