A large British stockpile of old mustard agent that had been made and stored since World War I at M. S. Factory, Valley near Rhydymwyn in Flintshire, Wales, was destroyed in 1958.
A large British stockpile of old mustard agent that had been made and stored since World War I at M. S Factory, Valley near Rhydymwyn in Flintshire, Wales, was destroyed in 1958.