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Charah Solutions, Inc. provides environmental services to the power generation industry in the United States. The company offers remediation and compliance services, including environmental management of landfills for coal-fired power generation facilities and new and existing ash ponds; and active pond management services, such as closure by removal, cap-in-place, and design and construction of new ponds. Its remediation and compliance services also include landfill development, construction, and management; site evaluation and characterization; preliminary design and cost estimates with life-cycle analysis; hydrogeological assessment; groundwater and containment modeling; permit application and processing for expansions and greenfield sites; design engineering; construction of landfills and cap and cover systems; conversion of impoundments to landfill sites; quality assurance and control, and documentation; engineered fills (off-site); and other related services. In addition, the company recycles recurring and contracted volumes of coal-fired power generation waste byproducts comprising bottom ash, fly ash, and gypsum byproducts for the use in various industrial purposes. Further, it provides coal ash management services; fossil services that include silo management, on-site ash transportation, and capture and disposal of ash byproduct from coal power operations; and manages combustion byproducts comprising bottom ash, as well as disposal of flue gas desulfurization gypsum, Pozatec/fixated scrubber sludge, and fluidized bed combustion fly ash; and environmental risk transfer services that manages the sites' remediation requirements. The company was founded in 1987 and is headquartered in Louisville, Kentucky.

DIRTT Environmental Solutions Ltd. operates as a interior construction company in Canada. Its ICE software provides the industrialized construction system to design, visualize, organize, configure, and install the job. The company offers interior solutions to doors, casework, timber, electrical, networks, access floors, solid, glass, combination, leaf folding, and headwalls. It serves retail, technology, hospitality, manufacturing, energy, healthcare, education, government, military, professional, and financial service sectors. DIRTT Environmental Solutions Ltd. was incorporated in 2003 and is headquartered in Calgary, Canada.

HireRight Holdings Corporation provides technology-driven workforce risk management and compliance solutions worldwide. It offers background screening, verification, identification, monitoring, and drug and health screening services for customers under the HireRight brand name. The company provides its services through software and data platform that integrates into its customers' human capital management systems enabling workflows for workforce hiring, onboarding, and monitoring. It serves transportation, healthcare, technology, financial services, business and consumer services, manufacturing, education, and retail industries, as well as not-for-profit organizations. HireRight Holdings Corporation was incorporated in 1990 and is headquartered in Nashville, Tennessee.

Laser Photonics Corporation provides integrated laser blasting solutions for corrosion control, rust removal, de-coating, pre- and post-welding, laser cleaning, and surface conditioning in the Americas, Europe, Asia, the Middle East, and North Africa. It offers laser cleaning systems, such as CleanTech Titan FX for cleaning, rust removal, and surface conditioning; CleanTech Titan Express, a high-power fiber laser for cleaning and surface conditioning; CleanTech MegaCenter, an industrial-grade laser parts cleaning, rust removal, and surface conditioning system; CleanTech Handheld LPC-50-CTHD, an entry-level dual axis laser cleaning and surface treatment system; CleanTech Handheld LPC-100-CTHD, an air-cooled pulsed laser systems; CleanTech Handheld LPC-200-CTHD for cleaning rust, remove paints, and other coatings; CleanTech Handheld LPC-300-CTHD, a air-cooled laser system; CleanTech Handheld LPC-1000-CTHS, a single axis laser cleaning and surface treatment system; CleanTech Handheld LPC-1000-CTHD, a portable handheld roughing laser cleaner; CleanTech Handheld-1500-CTHS, an handheld laser cleaning, roughing, and surface preparation system; CleanTech Handheld-1500-CTHD, a dual axis fiber laser system; CleanTech Handheld LPC-2000-CTHD for cleaning rust and remove coatings; CleanTech LPC-3000-CTHD for cleaning and removing rust, corrosion, and other materials; CleanTech Laser Blaster Cabinet, a laser cleaning machine; CleanTech Robotic Cell Enclosure, an AI-capable laser cleaning system that eliminates the concerns over human hazard and eye safety; CleanTech EZ- Rider, a laser cleaning tool; and CleanTech Robot, an industrial robotic laser cleaning system. The company also provides laser cutting machines; laser engraving machines; laser marking machines; laser welding machines; 3D metal printers; laser glass scribing systems; ITO removal systems; glass cutting lasers; glass wafer dicing products; laser glass marking; microscope slide and covers laser cutting systems; precision glass scribers; semiconductor laser systems; OEM laser marking and engraving parts; fiber lasers; scanning and cutting heads; mobile handheld laser HD cart; mobile rugged cases; enclosures; fume extractors; rotary indexers; water chiller machines; X-Y tables; USB controllers; and custom lasers. Laser Photonics Corporation was incorporated in 2019 and is headquartered in Orlando, Florida.