Industry on Parade Compilation #30. Educational film concerning measures taken in various industries to maintain air quality inside manufacturing plants and emissions. Exterior shot, entry way to "Research Cottrell Inc" building. Men in suits discus a plastic mockup of a device to draw away smoke; more views of device models. Scenes of men manufacturing the device for use; welding steel with robotic spot welder. Men working on electrical controller for device. Exterior shots of new Con Edison power plant on Staten Island, NY.