By the time information on the dangers of asbestos inhalation reached the main masses, millions of individuals have already been employed in companies whose buildings contained asbestos. Asbestos was seen as a revolutionary material because of its relatively cheap cost and it high insulating properties. As a result, it was widely used in ducting, piping and wall installations were there was a need to reduce heat transfer. However, it was later realized that manufacturers were concealing the after effects of asbestos exposure due to the high financial gains they were receiving from its production.