Overview

The Clean Air Acts of 1968 were the follow-up to the Clean Air Acts of 1956 which reduced pollution in the cities of England by creating smokeless zones, moving power plants out of the cities, and introducing cleaner burning fuels. Both were spawned by the Great Smog of London in which coal pollution was trapped in the atospehere and caused the deaths of around 12,000 individuals.
The Clean Air Acts of 1968 introduced the the idea of using tall chineys for industrial burning of coal and gassous fuels because the legislation felt that [sulphur dioxide] removal was impossible. They therefore wanted to release the [sulpfur dioxide] as high as possible to control the smoke pollution.

External Links

• Encyclopedia of the Atmospheric Environment.