by BandA
Is it brake dust? If so, not really safe to breath in.
Railroad Forums
Mystery Dust in MBB Coach Vestibules
- Discussion relating to commuter rail, light rail, and subway operations of the MBTA.
Moderators: sery2831, CRail
by GU1001
Hasn't the T been dropping fresh ballast lately? Could be stone dust from the fresh ballast.
