'Dirtiest' tube line (air quality)
"CharlesPottins" wrote in message
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Nope. Only happens when changeing to Northern. Mist is presumably fine oil
particles.
BTW, talking of such aerosol effects, anyone know what happened when
experiments carried out on tube with spreading microbes, back in 1950s?
Surely you remember "Quatermass and the Pit"?
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