Heavy work under way in Libby, Mont., with small business firm needed.

Environmental engineers have surveyed 600 homes in Libby, Mont., for asbestos contamination, finding more contamination than first estimated, making room for another contractor that will be needed for further cleanup.

At the same time, workers finished removing vermiculite insulation from the first home Aug. 16, with other cleanups this year to follow.

Aug. 26 is ...