Mike Labbe of Cote Crane Corp. of Auburn directs crane operators Ben Lavigne and Nick McGee on Friday at Baxter Brewing in Lewiston. Employees from Maine Oxy and Cote Crane replaced a tank of carbon dioxide, referred to as the “fifth ingredient” in brewing beer, Baxter quality director Merritt Waldron said. One tank lasts about a month, he said. Dylan Harvey, a rigger for Cote, works near the top of the tank. Daryn Slover/Sun Journal