A NIOSH evaluation found that vermiculite and basolite dust did not represent a health hazard under the observed conditions of use, but recommended respirators when moving large amounts or cleaning chambers; this is a documented negative finding, not evidence that all vermiculite dust is harmless.
Source: CDC/NIOSH: HHE 73-20-80 — Vermiculite and basolite dust at Airco Vacuum Metals ↗Dust entry
Vermiculite dust
Dust generated while handling vermiculite in metallurgical and industrial operations.
Airborne form
dust
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
respirable-dust exposure concernoccupational exposure hazardhealth effects depend on material and conditions
Evidence
Controls
- enclosure
- local exhaust ventilation
- respirator use during bulk handling
- dust suppression
- exposure monitoring