Fact Sheet - Portland, OR (N. Suttle Rd.)

Site Background

Portland, OR
Supreme Perlite Company

This site is located at 4600 North Suttle Road, 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 primarily received vermiculite from South African mines. Libby vermiculite was also known to be processed in the late 1960’s or early 1970’s. This site is currently operating.

* Denotes a site where an assessment of the prevalence of asbestos-related disease in former workers and their household contacts is ongoing. Reports on these assessments will be available on the agency website when they are completed.