We conclude that any manipulation of new asbestos containing brake components would be expected to yield free dust containing chrysotile asbestos of respirable size. That the vast majority of these fibers and particulates would not be counted as regulated fibers rendering assessment of potential exposures in the work place, based on data of Permissible Exposure Limits or Regulated Fibers, questionable.

The findings of Atkinson et al. do not, in our view, "further raise concerns" about historical asbestos exposures experienced by automotive mechanics because of the vast amount of published literature to the contrary.