Thomas N. Kalishman

SAK Construction LLC provides pipeline rehabilitation and tunneling contracting services. The firm offers repairing of the sewer and pipeline infrastructure in metropolitan areas without excavation or disruption by utilizing state-of-the-art trenchless technologies, including CIPP (cured-in-place pipe) pipeline rehabilitation. The company was founded in 2006 and is headquartered in O'Fallon, MO.

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.