of, and may inspect, any plant producing more than 30 tonnes per year. Technology Although crude chemical warfare has been employed in many parts of the world for thousands of years, "modern" chemical warfare began during World War I - see Poison gas in World War I. Initially, only well-known commercially available chemicals and their variants were used. These included chlorine and phosgene gas. The methods used to disperse these agents during battle were relatively unrefined and inefficient…
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