Founded in 1966, Hallsten Corporation is a designer and fabricator of aluminum structures, with experience in environmental odor control covers, marine gangways and other spanning structures. The companys engineers and designers use the latest in Computer Aided Design and Drafting (CADD) to produce custom designs to meet the particular requirements of each project and site. It offers a variety of products for the environmental, industrial and marine industries. Hallsten Corporations Aluminum Lite-Span Covers provide gaseous emissions containment for clarifiers, sludge-holding tanks, bio-towers, aeration basins, etc.