How did underground railways lead to pollution problem
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Air pollution in underground railway areas and health risks for workers. In underground railway areas, air pollution is mainly due to airborne particles. ... These particles penetrate the respiratory apparatus, and the finest among them (PM2.5) can settle in the pulmonary alveoli
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Drawbacks-- It relised harmfull gases like CO 2 & SO 2. - During the ime of transportation there was lot of safogation problem in train. - It polluted the outer atmosphere of the city by relising pollutants
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