To his horror , the levels of deadly substances were eighty times greater than the maximum safe concentration .
He was the head of a counter-intelligence department and performed measurements outside the chemical weapons facilities to make sure that foreign spies could not detect any traces of production .
To head 's horror , the levels of deadly substances were eighty times greater than the maximum safe concentration .
He was the head of a counter-intelligence department and performed measurements outside the chemical weapons facilities to make sure that foreign spies could not detect any traces of production .