Christian Thomas Swinbank

ParFab Industries, Inc. operates as a fabrication shop, that provides production services to petrochemical and energy industries. Its shop fabrication services include steel fabrication, ASME piping, blasting, painting, and insulation services for fired heaters, transfer lines, hydrogen reformers, package boilers, structural steel, and custom projects. The company was founded in 2001 and is headquartered in Inola, OK.

Rockwater Energy Solutions, Inc. provides water management and chemical technologies solutions. It offers fluids conditioning, water transfer, flow back and well testing, fluid logistics, above-ground storage, construction services, completion and production of chemicals, coiled tubing chemicals, and chemical logistics. The company was founded on June 1, 2011 and is headquartered in Houston, TX.

Sprint Energy Services LP provides oilfield waste management solutions. It provides specialized, technical environmental services to the upstream energy industry. The firm offers services and related rental equipment for waste management, environmental and safety solutions at customer well-sites. The company was founded on May 7, 2012 and is headquartered in Houston, TX.

NRC WWS Ltd. provides drainage and sewer services. The company is headquartered in Birkenhead, the United Kingdom.

NRC Group Holdings LLC operates as a private equity firm. It serves the aerospace, defense, maritime, government, and environmental sectors. The company was founded on April 30, 2018 and is headquartered in Wilmington, DE.

NRC Group Holdings Corp. engaged in the provision of environmental, compliance, and waste management services. It operated through the following business segments: Domestic Standby Services, Domestic Environmental Services, International Services, and Sprint. The Domestic Standby Services segment supplied commercial standby oil spill compliance and emergency response services. The International Services segment included the provision of industrial, emergency response and drainage services. The Domestic Environmental Services segment provided environmental and industrial services to energy, engineering and construction, environmental, health care, industrial, maritime, railroad, transportation and other customers across the United States. The Sprint segment offered energy-related services and waste disposal services predominately to upstream energy customers currently concentrated in the Eagle Ford and Permian Basins. The company was founded on June 3, 2017 and was headquartered in Houston, TX.

Part of KSG International Ltd., Sureclean Holdco Ltd. operates as a holding British company with interest in providing cleaning and waste management services. The private company is based in London, UK. The company was founded in 2014. Sureclean Holdco was acquired by KSG International Ltd. from Republic Services, Inc. on January 27, 2023.