Photograph of a room full of unidentified machinery at the University of Southern California, [s.d.]. Three large metal machines are lined up from the foreground at right to the background at left. The machine at right has a long tank for its base, with another tank on top at right. Pipes with valves and gauges attached run from the machine to the ceiling. The machine at center is a large rectangular box with gauges on the front and a ventilation duct overhead. The machine at left has many pipes on the side. Windows covered by Venetian blinds can be seen in the background at left. The machine at right is identified as a Banbury Mixer, a machine used for mixing or compounding plastics.