Metra today said it is installing more efficient air filters on its train cars and switching to cleaner fuel for its locomotives to help reduce commuter exposure to toxic diesel fumes.
Source: http://feedproxy.google.com/~r/ChicagoBreakingNews/~3/bcqB11HuHGg/chibrknews-metra-to-install-more-air-filt-01142011,0,2168340.story
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