Deadly nerve warfare agents, including VX and sarin, were released in open--air testing conducted at the Edgewood Arsenal in Harford County in 1965 and 1969, according to information released yesterday by the Defense Department.
An undisclosed number of U.S. military personnel dressed in protective suits and masks were exposed to the nerve agents in at least some of the Maryland tests. Pentagon officials said not all of them were informed that chemical and biological agents were being used.
The disclosures appeared to be the first acknowledgement that deadly nerve agents were released in outdoor tests on U.S. personnel in Maryland.
The tests at Edgewood in the 1960s were...