For over 45 years COH has been successfully Designing, Manufacturing and Installing Cranes, Gantry Cranes, Hoists and Gates for Power House, Turbine Handling, Water Intake, Draft Tube, Stop Log and Bulkhead, Spillway, Pumped Storage and Tunneling support applications all over North America. COH specializes in Wire Rope, Link Chain, Roller Chain, Rack and Pinion and Screw type lifting and lowering technology. COH provides solutions for the special, unusual and demanding applications found in the Hydropower Industry. Additional Services and Equipment offered are; Reverse Engineering, Certification, Load Testing, Complete turnkey gate, crane, and hoist, modernization from assessment (evaluation) engineering to on site modifications, upgrades, refurbishments and replacements. Roller, and Radial Gates, Over Under Gates, Roller Trains, Imbedded Parts and Gate Actuators. COH also supplies custom designed gearboxes, and component parts for all brands of lifting products in your hydropower facility.