Airgas, Inc. (Radnor, Pa.; www.airgas.com) has announced that the Prologis International Centre South in Minooka, Ill. will be the site for its new air-separation unit (ASU) in the Chicago area. Construction of the facility is scheduled to begin in February 2014 and be finished by July 2015. The ASU will produce more than 450 metric tons tons per day (m.t./d) of oxygen, nitrogen and argon, with production expected to begin in summer 2015. The company first announced its plans to build a new ASU in the Chicago area in September 2012. The new plant will be managed by Airgas Merchant Gases, the Airgas company that currently manages Airgas' network of ASUs, procurement and supplier relationships, and the logistics and distribution of bulk atmospheric and other gases.