Borehole, Surface, and Water-Borne Geophysical Surveys  at the Callahan Mine Superfund Site in Brooksville, Maine: October 2016 to July 2018
From October 2016 to July 2018, the U.S. Geological Survey, in cooperation with the U.S. Army Corps of Engineers and Maine Department of Transportation, collected surface, marine and borehole geophysical surveys to characterize the subsurface materials on land and under the water at a former mine facility in …