Washington Post Video Offers Glimpse of Geophysical Survey

The U.S. Army Corps of Engineers has been scouring the community and removing munitions and fragments on and off since the 1990s ... Now geophysicists hired by the corps are in Dalecarlia Woods studying the far end of a firing range "fan" that runs 1,550 yards northwest from Herzstein's driveway. There, in the closing months of World War I, the Army fenced in a site where it tested an array of mortars designed to fire chemical weapons, officials said ... The search was recently extended to Dalecarlia Woods, near the Dalecarlia Reservoir, which supplies water to more than a million people in the region.
Washington Post
October 6, 2009: pg B-1