Page 33 - Fundamentals of Air Pollution
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12 1. The History of Air Pollution
Fig. 1-6. (Right) Pittsburgh before the decrease in black smoke. Source: Allegheny County,
Pennsylvania. (Left) Pittsburgh after the decrease in black smoke. Source: Allegheny County,
Pennsylvania
In 1964, the International Union of Air Pollution Prevention Associations
(IUAPPA) was formed. IUAPPA has held International Clean Air Con-
gresses in London in 1966 (21); Washington, D.C., in 1970 (22); Dusseldorf
in 1973 (23); Tokyo in 1977 (24); Buenos Aires in 1980 (25); Paris in 1983
(26); Sydney in 1986 (27); The Hague in 1989 (28); and Montreal in 1992 (29).
