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Dust entry

Uncontaminated vermiculite dust

Dust from vermiculite not known or presumed to contain asbestos contamination; NIOSH distinguishes it from asbestos-contaminated Libby vermiculite.

Airborne form

fiber

The form describes what is suspended in air at the point of exposure. A material can produce more than one form, such as dust during handling and fume during heating.

Health effects

prolonged high-level dust exposure concern

Evidence

NIOSH states that available information provides no clear evidence that dust from vermiculite itself causes serious health effects, while advising workers to avoid prolonged, high-level exposures; the serious observed diseases in Libby workers are attributed to contaminant fibers rather than vermiculite itself.

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What health effects are caused by uncontaminated vermiculite? · 1
Based on available information, there is no clear evidence that dust from vermiculite itself causes any serious health effects. Nevertheless, as with any dust, workers should avoid prolonged, high-level exposures. The observed health effects associated with asbestos-contaminated vermiculite can be attributed to contaminant fibers, rather than to vermiculite itself.
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page 1 · What health effects are caused by uncontaminated vermiculite? · 1
Based on available information, there is no clear evidence that dust from vermiculite itself causes any serious health effects. Nevertheless, as with any dust, workers should avoid prolonged, high-level exposures. The observed health effects associated with asbestos-contaminated vermiculite can be attributed to contaminant fibers, rather than to vermiculite itself.

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