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Ethics and Environmental Health

Map of Plants that Processed Asbestos-tainted Ore

Plants that Processed Asbestos-tainted Ore

Millions of tons of the same asbestos-tainted vermiculite ore that sickened and killed hundreds in Libby, Mont., was shipped to plants in cities across the United States and Canada. The mine operated from 1924 to 1990. Some of the plants were owned or licensed by the mine's owners, the Zonolite Co., and after 1963, the W.R. Grace Co. Other plants were operated by firms that bought the ore. The ore was used in potting soil, insulation and other construction materials.

Map of Plants
Map of Plants

Photos courtesy of Dudley Dana, Dana Gallery