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Likewise, why is the tube so dirty?
Pollution levels in some London Underground stations are up to 10 times above guidelines, it has been revealed. It is caused by a build up of tiny particles of metal, skin and dust and fibre from clothes, forming a 'toxic miasma' whipped up by passing trains into the lungs of commuters.
Furthermore, which tube line is the dirtiest?
Revealed: The dirtiest tube lines in London
- The Central line. The Central line is the most polluted line.
- The Victoria line.
- The Northern line.
- The Bakerloo line.
- The Jubilee line.
- The Piccadilly line.
- The District line.
- The Metropolitan line.
The London Underground has high levels of a type of air pollution linked to health problems including heart disease, strokes and lung cancer, according to a new study. Research carried out on various parts of the network found that concentrations of fine particles (PM2. 5 levels on the London Underground.