Enviri
Corporate brand
UnclaimedAn American environmental services company serving heavy industry, railways, and energy markets.
Last updated August 26, 2026
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Overview
Enviri Corporation is an environmental services and industrial solutions company headquartered in Philadelphia, Pennsylvania. The company works with large industrial customers on environmental management, materials recovery, specialty waste treatment, and rail-related engineering and maintenance. Its activities are organized principally through Clean Earth, Harsco Environmental, and Harsco Rail, with additional businesses including Altek, SteelPhalt, and Black Beauty Abrasives. The company traces its origins to 1853, when it was established as The Harrisburg Car Manufacturing Company, a railway-car manufacturer. It later became the Harrisburg Steel Corporation in 1935 and adopted the Harsco Corporation name in 1956 after a series of acquisitions and organizational changes. During the twentieth century, Harsco expanded beyond railway equipment into metals and minerals processing, industrial services, construction-related products, and other engineered applications. By the early 1990s, its operations included more than 250 manufacturing, reclamation, distribution, and service facilities in 14 countries, with products and services serving defense, industrial, commercial, and construction customers. A major strategic shift occurred as Harsco increased its emphasis on environmental and circular-economy services. Its Metals & Minerals business was renamed Harsco Environmental in 2019, reflecting a stronger focus on recovering value from industrial by-products and supporting lower-waste production processes. In the same year, Harsco acquired Clean Earth, a United States provider focused on specialty waste streams. In April 2020, it acquired Stericycle's Environmental Solutions business, expanding its environmental-services portfolio. The company also retained and developed industrial technology businesses. In 2018, Harsco acquired Altek, a United Kingdom producer of aluminum-processing equipment. Harsco Rail continued to provide rail infrastructure equipment, maintenance, and related engineering services, while other subsidiaries and brands addressed industrial abrasives, processed materials, and infrastructure products. In 2023, Harsco Corporation adopted the Enviri name as part of a corporate rebranding intended to present the business as an environmental company rather than primarily as a diversified industrial manufacturer. Enviri describes its mission around addressing complex environmental challenges for sectors such as steel, rail, and energy. It operates in more than 30 countries and employs approximately 12,000 people worldwide, according to the referenced company description. The company remains publicly traded, with its common stock listed on the New York Stock Exchange under the symbol NVRI; the former Harsco symbol was HSC. Its shares are also identified as components of the S&P SmallCap 600 and Russell 2000 indexes.
History
Enviri's history begins in 1853 with the creation of The Harrisburg Car Manufacturing Company, a railway-car manufacturer based in Pennsylvania. The company later became the Harrisburg Steel Corporation in 1935. Following a series of acquisitions and corporate changes, it adopted the Harsco Corporation name in 1956 and was organized around three principal activities: Metals & Minerals, Rail, and Industrial. Over subsequent decades, Harsco developed from a railway-equipment manufacturer into a diversified industrial company. Its businesses supplied products and services to defense, industrial, commercial, and construction customers. By the early 1990s, the company had more than 250 manufacturing, reclamation, distribution, and service facilities across 14 countries. This broad operating base reflected Harsco's expansion into engineered products, industrial services, materials processing, and infrastructure-related activities. The company later began concentrating more visibly on environmental services and the recovery of value from industrial materials. In 2018, Harsco expanded its equipment portfolio through the acquisition of Altek, a United Kingdom company producing aluminum-processing equipment. In 2019, its Metals & Minerals division was renamed Harsco Environmental. That same year, Harsco acquired Clean Earth, a United States business specializing in services for specialty waste streams. These changes increased the importance of environmental management, resource recovery, and waste treatment within the corporate portfolio. In April 2020, Harsco acquired Stericycle's Environmental Solutions business. The transaction further broadened its environmental-services activities and added capabilities related to complex waste streams. The company continued to operate rail and industrial businesses alongside its environmental divisions, including Harsco Rail and other specialized subsidiaries. In 2023, Harsco Corporation rebranded as Enviri. The new name reflected the company's effort to identify itself primarily as an environmental company serving major industrial sectors. Enviri's activities remained centered on three principal divisions: Clean Earth, Harsco Environmental, and Harsco Rail. Its wider portfolio also included Altek, SteelPhalt, and Black Beauty Abrasives. Enviri currently describes its work as addressing complex environmental issues for large industrial customers, particularly in steel, railways, and energy. The company operates in more than 30 countries and employs approximately 12,000 people worldwide, according to the referenced encyclopedia material. It remains publicly traded on the New York Stock Exchange under the ticker NVRI, replacing the former Harsco symbol HSC. Its common stock is also included in the S&P SmallCap 600 and Russell 2000 indexes.
- 2023
Harsco rebrands as Enviri
[1]The company adopts the Enviri name and presents itself as an environmental company serving heavy industry and related sectors.
- 2020
Stericycle Environmental Solutions acquisition
[1]Harsco acquires Stericycle's Environmental Solutions business in April, increasing its environmental-services capabilities.
- 2019
Environmental portfolio expands
[1]Harsco renames Metals & Minerals as Harsco Environmental and acquires Clean Earth, a United States specialty-waste services provider.
- 2018
Acquisition of Altek
[1]Harsco acquires Altek, a United Kingdom manufacturer of aluminum-processing equipment.
- 1956
Harsco Corporation name adopted
[1]After acquisitions and organizational development, the company becomes Harsco Corporation and operates through Metals & Minerals, Rail, and Industrial divisions.
- 1935
The company becomes Harrisburg Steel Corporation
[1]The organization adopts the Harrisburg Steel Corporation name.
- 1853
The Harrisburg Car Manufacturing Company is founded
[1]The company begins as a railway-car manufacturer, establishing the corporate lineage that later leads to Harsco and Enviri.
Products and positioning
Enviri positions itself as an environmental and industrial solutions provider that helps heavy-industry customers recover materials, manage complex waste streams, improve operational efficiency, and reduce the environmental impact of production. Its differentiated scope comes from combining environmental services with specialized rail and industrial engineering capabilities.
Specialty waste management
Clean Earth
Clean Earth provides environmental services for specialty waste streams in the United States. It forms a central part of Enviri's environmental-services portfolio and supports customers that require handling, treatment, processing, and management of complex wastes.
Industrial environmental services · 2019
Harsco Environmental
Harsco Environmental is the successor to Harsco's Metals & Minerals business. It focuses on services for heavy industry, including the recovery and processing of industrial by-products and materials associated with steel production. The division reflects Enviri's emphasis on resource recovery and lower-waste industrial operations.
Railway engineering and maintenance
Harsco Rail
Harsco Rail provides railway maintenance and engineering equipment and related services. It preserves Enviri's historical connection to the rail sector and supplies specialized capabilities for railway infrastructure customers.
Aluminum-processing equipment
Altek
Altek is a United Kingdom producer of aluminum-processing equipment acquired by Harsco in 2018. It forms part of Enviri's specialized industrial-equipment portfolio.
Infrastructure and processed materials
SteelPhalt
SteelPhalt is identified as an Enviri subsidiary associated with processed industrial materials and infrastructure applications. The available reference material does not provide a fuller product description.
Abrasive materials
Black Beauty Abrasives
Black Beauty Abrasives is identified as an Enviri subsidiary or operating brand serving abrasive-material applications. The available reference material does not specify its full product range.
Brand decisions
2023
Corporate rebrand from Harsco to EnviriStrategyBackground
The company had shifted toward environmental services while retaining rail and specialized industrial businesses.
Action taken
Harsco Corporation adopted the Enviri name and repositioned the group around environmental solutions for heavy industry.
Aftermath
The company continued operating through Clean Earth, Harsco Environmental, and Harsco Rail, while its NYSE ticker changed from HSC to NVRI.
2020
Acquisition of Stericycle Environmental SolutionsM&ABackground
Harsco sought to expand its environmental-services activities and capabilities in specialty waste management.
Action taken
In April 2020, Harsco acquired Stericycle's Environmental Solutions business.
Aftermath
The transaction broadened the environmental platform that later operated under the Enviri name.
2019
Metals & Minerals renamed Harsco EnvironmentalStrategyBackground
Harsco was placing greater strategic emphasis on environmental services, industrial by-product recovery, and materials processing.
Action taken
The Metals & Minerals division was rebranded as Harsco Environmental.
Aftermath
The renamed division became one of the principal operating platforms later carried into Enviri.
Recent events
Reported
Harsco completes credit refinancing[2]
Harsco announced that it completed a $500 million new term loan facility and extended the maturity of its existing $700 million revolving credit facility.
Reported
KPS Capital Partners announces agreement to acquire IKG[3]
KPS Capital Partners announced that it had signed a definitive agreement to purchase IKG from Harsco Corporation for $85 million, subject to customary adjustments, closing conditions and approvals.
Sources3 sources
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