Dorwin E. Hawn

Insituform Technologies LLC provides cured-in place pipe, other technologies, and services for the rehabilitation of water and wastewater pipeline systems. It offers solutions to remediate operational, health, regulatory, and environmental problems resulting from aging and defective pipelines. The company was founded in 1971 and is headquartered in Chesterfield, MO.

United Pipeline Systems LLC provides natural gas pipeline services. Its products include thermoplastic liners, joining methods, lined fittings and spools and liner monitoring system. The company was founded by Dorwin Hawn and is headquartered in Edmonton, Canada.

Association of Professional Engineers & Geoscientists of AB is a non profit organization that regulates the practices of engineering and geoscience in Alberta. Its function is licensing individuals and companies that want to practice engineering and geoscience in Alberta. The applicants and companies that meet APEGA’s standards for ethical, professional, and technical competency earn the right to practice and use reserved titles and designations. The company was founded in 1920 and is headquartered in Edmonton, Canada.

Aegion Corp. engages in the provision of infrastructure protection, maintenance, and rehabilitation. It operates through the following segments: Infrastructure Solutions, Corrosion Protection and Energy Services. The Infrastructure Solutions segment focuses on the municipal water and wastewater pipeline sector. The Corrosion Protection segment captures the benefits of continued oil and natural gas pipeline infrastructure developments. It also protects, maintain, rehabilitate, assess, and monitor pipelines from the effects of corrosion. The Energy Services segment gives value proposition based safety and labor productivity programs, which allow cost-effective construction, maintenance, turnaround, and specialty services. The company was founded in 1971 and is headquartered in Chesterfield, MO.