Suggest cleaning out brake dust with a damp rag, rather than blowing it out with compressed air. --Steve Paul Smith wrote: >There are 4 types of asbestos. Only 2 are hazardous. >I don't know which are used in automotive applications. >Brake dust was the biggest issue since it formed sub 50 micron fibres, which >lodge in the lungs. > >PVS > > > >