This clip demonstrates how NOT to approach a hazmat incident. It is from the very good 1986 video, First On the Scene, produced by the Chemical Manufacturer's Association (CMA) for training first responders to the scene of hazardous materials incidents. This video was widely used in early Hazwoper training classes. A second posted clip, HazMat Response doing it better 1986, shows the same incident with a better response (but not perfect)