A federal bankruptcy court has set an Oct. 31 deadline for homeowners with Zonolite insulation to file an asbestos cleanup claim against W.R. Grace & Co.
Zonolite attic insulation is a loose-fill vermiculite product that can contain naturally occurring asbestos. Much of the Zonolite manufactured in the United States came from the vermiculite mine at Libby.
The Libby mine, which closed in 1990, has been linked to asbestos exposure that has sickened thousands and killed more than 200 people in the Libby area.
Grace reached an agreement in August to resolve all asbestos claims against the company, allowing it to emerge from bankruptcy without further obligations for asbestos injury.