Our experience in the construction industry allows us to offer excellent services for local contractors in building communities to commercial hubs across Iowa. We use all of our resources safely and efficiently to ensure a high level of performance and customer satisfaction. Hallett Materials started its operation in 1918 with a single aggregate pit. Now operating over 40 aggregate deposits in Central and Western Iowa, Hallett Materials has been able to provide quality service and product for over a century throughout Iowa.
Established in 1964, Keystone Electrical Manufacturing Company is a manufacturer of electrical control panels, custom medium voltage systems, including switchgear and power centers, as well as fully assembled substation control centers. The company provides design engineering and sheet metal fabrication, assembly, wiring and testing. Some of its customers include investor owned utilities, public power entities, cooperatives, engineering firms and EPC/BOP contractors. Keystone Electrical Manufacturing Company also works with a variety of engineering firms, contractors, private developers and original equipment manufacturers servicing the electric power industry, including Black and Veatch, MSE Power Systems, Toth and Associates and Burns & McDonnell among others.
