EMSL Analytical, Inc. under contract with the U.S. Environmental Protection Agency (US EPA), continues to provide asbestos emergency response analytical support at the Libby Asbestos Superfund Project site in Libby, Montana. Work performed over the past 18 years includes polarized light microscopy (PLM), phase contrast microscopy (PCM), and transmission electron microscopy (TEM) analyses on hundreds of thousands of samples for varying turnaround times, for numerous matrices including soil, vermiculite, air, water, settled dust, tree bark and forest floor duff. EMSL has also assisted with method development, method validation and technical support to the project.