||6 THE THIRTY-SIXTH ANNUAL REYNOLDS LECTURE high material standard of living. To eliminate them would cause such a drastic decrease in that standard of living that this is seldom proposed as a remedy. It is probably no secret to most of you that public awareness of air pollution has grown in recent years. So has my own. Twelve years ago I was working for a large petroleum company in the San Francisco Bay area, and one of my responsibilities was operating a pilot plant which produced a by-product stream of about 60 pounds an hour of a waste fuel gas. We had a system for disposing of this waste gas into the refinery's fuel system, which put it to good use and avoided any air contamination. However, that system had faults, some technical and some administrative, which occasionally caused it to release large amounts of this combustible gas in our plant. This represented a genuine explosion hazard. In despair of solving those problems, I decided to simply run this gas up a stack into the atmosphere. It wasn't illegal at that time, although it certainly was contrary to the spirit of the air pollution laws. Nonetheless, at that time, none of those involved seemed too concerned, including me. I did think about the air pollution aspect, but not very long or hard. Others, however, were more sensitive to the air pollution problem. In 1966 the American Institute of Chemical Engineers had a national meeting in Salt Lake City. At that meeting, I found myself present at a press conference at which the President of the AIChE discussed with the press the areas of concern of chemical engineers. One of the topics he mentioned briefly was air pollution. This was reported by the press. The next day a friend who is active in AIChE affairs and employed by a large mining and smelting company in Salt Lake was duly chastised by one of his superiors for being associated with an organization whose president would utter the words "air pollution" in Salt Lake City. Apparently that company considered the mentioning of these words in Salt Lake as a direct insult to them. Several years later I found myself working on some educational films, which brought me into contact with a film producer and free-lance photographer who was the only man I have ever met who rose each morning and smiled in delight when there was a thick brown haze over the Salt Lake Valley. It wasn't personal satisfaction but employment that he saw in the haze. He was working for a large mining and smelting firm in Salt Lake, which asked him to obtain a series of pictures showing significant visual air pollution while their mine and smelter were shut down by a long strike. He showed me his results; they were impressive indeed. It is hard to say whether the situation was as bad or worse during the strike as before or after, but the strike certainly did not remove all visible pollutants from the air.