Asbestos in Montana A presentation of the geological, ecological, and social implications of Vermiculite mining near Libby, Montana Christopher Currie.

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Asbestos in MontanaAsbestos in Montana

A presentation of the A presentation of the geological ecological and geological ecological and

social implications of social implications of Vermiculite mining near Vermiculite mining near

Libby MontanaLibby Montana

Christopher CurrieChristopher CurrieOlivia ThomsonOlivia Thomson

Geology 361Geology 361

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Introductionbull Vermiculite Mining in Libby Montana

ndash Zonolite Brand Vermiculite supplied 90 of Worldndash Tremolite (Asbestos) Contamination from Mining and

Environmental Pollutionndash Seattle Post-Intellingencer Breaks Story in 1999ndash Revealed WR Grace amp Company hid affects of

Asbestos from Residentsndash Largest US Environmental Litigation takes place in

MontanaDisease rate 40-60 larger than national average

Hundreds Killed amp Thousands Affected

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Geologybull Local Libby Geologybull Rainy Creek Igneous Complexbull Vermiculite

ndash Sources Uses Methods of Extractionndash Environmental Issuesndash Exfoliated Asbestos within Vermiculite Ore

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What is Asbestosbull Vermiculite Tremolite -

Ca2 Mg5 Si8 O22 (OH)2bull Zonolite brand Vermiculite and its uses

ndash Fireproofing Insulation Ceiling Tiles Heat Disperalndash In Libby Yards Football Fields Playgrounds Parks

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A common insulation found in many building including the one you are in nowhellip

Libby as a Case Studybull History of Local Miningbull Libbyrsquos Contaminationbull Libby Clean-up and Superfundbull Litigation and Ongoing Struggles

ndash Mesothelioma Cancerndash EPA Declares Public Health Emergencyndash WR Grace acquitted in 2009 Case

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Lessons Lessons and Conclusionsand Conclusions

Libby and its Relationship to Environmental Geology

Social Ecological and Geological Issues

A Legacy of Mining in Rural Western Communities

Moving Forward in Libby

Sources Citedbull Bandli B R Gunter M E Twamley B Foit F F Jr and Cornelius S B 2003

Optical compositional morphological and x-ray data on eleven particles of amphibole from Libby Montana USA Can Mineral 411241 1253

bull Bandli B R Gunter M E 2006 A Review of scientific literature examining the mining history geology mineralogy and amphibole asbestos health effects of the rainy creek Igneous complex Libby Montana USA Informa Healthcare 949-962

bull Gunter M E Dyar M D Twamley B Foit F F and Cornelius S 2003 Composition Fe3+ 1113088Fe and crystal structure of non- asbestiform and asbestiform amphiboles from Libby Montana USA Am Mineral 881970 1978

bull Gunter M E Singleton E Bandli B R Meeker G and Lowers H A 2005 Differentiation of commercial vermiculite based on statis- tical analysis of bulk chemical data Fingerprinting vermiculite from Libby Montana USA Am Mineral 90749 754

bull httpwwwepagovlibby