Barrett Burston Malting Company JC’s Constructions Supply of T-39 Thirebeam Barrett Burston Malting Company recently completed a maintenance upgrade on their malt factory in Thornleigh. Existing w-beam barrier, located at the entrance driveway to their plant had been installed to prevent large trucks from careering into the factory. The upgrade involved removing the existing barrier and replacing it with high-containment T-39 Thriebeam.