Documentation of Original Research Work On-Site

Numerous reports speak to the quantity of gas being produced at the Spring Valley site. Excerpts from Report of the Work Done at Bureau of Mines Experiment Station Spring Valley DC on War Gas Investigations During May, 1918 specify the quantities produced, as follows  

Arsenic trichloride. Started production May 18th. 192 pounds produced. Larger apparatus set up and operating to make about 35 pounds per day.  

Of all the toxic substances listed above. Lewisite is the most deadly. It is thought to be seven times more lethal than mustard gas. It has been called the Dew of Death, as a single drop on the skin could be fatal. Actual animal test results graphically demonstrate our concern over Lewisite. A concentration as low as 0.34 mg/1 would kill dogs in 7.5 minutes. The scientists extrapolated that 1 part per million would cause serious effects in a man if breathed for several hours. It is widely reported that a single drop on the skin can be fatal. 

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