(Memphis) After the 2001 anthrax attacks, the United States Postal Service installed Detection Systems to detect the presence of anthrax in many of their processing and distribution centers. However those systems do not detect ricin.
“I know it does test for many things. I’m not sure if ricin is one of those. I know it does test for anthrax,” said David Walton from the United States Postal Service.
However offsite mail facilities in Maryland were able to detect ricin in letters addressed to Senator Roger Wicker and President Barack Obama.