Are family members of vermiculite workers at risk?
Workers who were exposed to vermiculite during the day can inadvertantly bring asbestos fibers home on their clothes, shoes, and bodies.
People who live in these households could be exposed to asbestos, too. Even handling and washing a worker’s clothes can expose someone to asbestos.
Another link that maybe helpful:
Mesothelioma Attorneys

Asbestos Exposure Health Risks: Mesothelioma and Lung Cancer Diagnoses