Exposure to Asbestos-Containing Vermiculite from Libby, Montana, at 28 Processing Sites in the United States, Summary Report

摘要

This report summarizes what the Agency for Toxic Substances and Disease Registry (ATSDR) and state health department partners learned during their evaluations of 28 sites that received asbestos-containing vermiculite from a mine in Libby, Montana. These 28 site evaluations focused on potential past, current, and future pathways of exposure to the asbestos associated with vermiculite from the Libby mine. Most of the processing facilities at these sites operated for different time periods in the past, during the 1920s to the early 1990s. ATSDR began evaluating Libby-related vermiculite sites in response to documented asbestos-related health effects in Libby, Montana, and at the request of the U.S. Environmental Protection Agency (EPA). ATSDR evaluated some of the 28 sites itself, while others were evaluated in collaboration with state health departments.