Media Announcements - Dearborn, MI
Zonolite Company/W.R. Grace
This site is located at 14300 Henn Street, Wayne County, Dearborn, Michigan.
While the actual years of operations for the Phase 1 sites vary overall, we do know that the Libby, Montana mine operated
from the 1920s until 1990. These Phase 1 sites may have received vermiculite from Libby at any time during these years.
All Phase 1 sites ceased processing of the vermiculite by in the early 1990’s. This site ceased operations in 1990.
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