Portland, OR
Vermiculite-Northwest, Inc.
This site is located at 2302 North Harding Avenue, Multnomah County, Portland, Oregon.
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 the early 1990’s.
This page last updated on December 08, 2008