Emil Frei & Associates, 1017 W Adams Ave, Saint Louis, MO 63122, US

Enclos Corporation, founded in 1976, is one of the leading specialty contractors in the United States. It specializes in computational fluid dynamics, field method installation, finite element analysis and hurricane impact wall testing. Its project management includes field, engineering, and fabrication and procurement services. Enclos Corporation has undertaken various projects for One Prospect Park, Royal Bank of Scotland, Orange County Performing Arts Center, United States Courthouse and Capital East End Complex. Additionally, the company provides services for monumental wall systems, such as structural glass walls, cable wall systems and clear-span structural elements. It conducts quality assurance program through training, video and three-dimensional animations and fabricates blast-resistant curtain walls. Headquartered in Eagan, Minn., Enclos Corporation is located in St. Louis.