Corval Group has had a relationship with 3M for over 40 years, completing work in the five state regions in nearly all of 3M’s facilities. Projects have encompassed additions, process piping and process ventilation. In 2009, Corval Group completed a 65.000 square foot addition to 3M’s Alexandria Manufacturing Facility. Project highlights included over 2,000 feet of concrete, encapsulated ductwork, five new make-up air handling systems producing over 165,000 c.f.m. of fresh air, 120,000 lbs. or 6,000 feet of custom high temp ductwork for a thermal oxidizing system. The piping systems totaled over 35,000 feet and included high and low pressure steam condensate along with chilled water and process piping. Corval assisted with the design and coordination from the beginning through the end of this project.