TBM tunneling

Barnard Construction Company, Inc. is a large heavy-civil construction company with 50 years in business, founded by Tim Barnard as a 25-year-old contractor. The company delivers complex projects across North America, including dams, reservoirs, water transmission, hydropower, power transmission, underground tunneling, oil and gas pipelines, and environmental construction.

ash pond capping and closureconventional concretedam constructiondrill and blastdust mitigationengineer procure constructEPB machineshigh-voltage transmission line constructionin-water constructionpipeline constructionProgressive Design-Buildreservoir constructionriver restorationroller-compacted concreteslurry machinesspecialized earthworksubstation construction

Bradshaw Construction Corporation is a tunneling contractor with over five decades of experience, providing cost effective tunneling solutions to the utility and transportation industries. The company describes itself as a leading contractor and technological innovator in the tunneling industry, committed to excellence, craftsmanship, safety, and earning clients' trust. It owns and operates an expansive fleet of heavy and underground construction equipment.

Caisson constructionCompressed air tunnelingConventional tunnelingdrill and blastHand tunnelingmicrotunnelingNATM/SEMPilot Tubepipe jackingpipe rehabilitationshaft constructionslip liningSlurrySupports

Frontier-Kemper specializes in heavy civil construction and underground mine development, known for expertise in the engineering and construction of deep shafts and tunnels of all sizes and complexity. Its FKC-Lake Shore division provides design/build/install services for hoisting and vertical conveyance systems. The company aims to be the industry's best source and best value for complete turn-key construction services and related products.

blind drillingconventional shaft sinkingcut-and-cover tunnelingdesign-builddrill-and-blast tunnelingengineering and construction of deep shafts and tunnelshoisting and vertical conveyance system design/build/installmicrotunnelingmine developmentraise boringrehabilitation & maintenanceSEM tunnelingslope construction