A NIOSH industrial-hygiene survey evaluated mineral-wool fibers and total and respirable particulate across production and user facilities, finding generally low production-worker exposures but higher and more variable user-worker exposures; small-diameter airborne fibers were most notable during blowing-wool installation.
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page 2 · Abstract · 2
page 2 · Abstract · 2
The production workers surveyed were found to have relatively low exposures to all forms of airborne particulate material, with few exceptions. The user workers had higher, but more variable exposures. ... Exposures to small diameter (<1.0 pm) fibers were not common, except in the installation of blowing wool. In those installation situations, electron microscopically visible airborne fibers were present in concentrations up to ten times greater than optically visible fibers.