Weaponry: Lewisite — America’s World War I Chemical Weapon

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The lewisite work at the Experimental Station was dangerous. A huge tub of soapsuds had to be readily available for soldiers to plunge into if gas from leaking pipes or vats of boiling chemicals contaminated them. Soldier-chemists tested human volunteers and animals to determine the effectiveness of the compound. George Temple, the head of the station’s motor maintenance department, repeatedly volunteered to be burned by poisonous gases. When a sample of lewisite was placed on his forearm, it caused redness, swelling, and huge silver-colored blisters that took eight weeks to heal.

One morning in August 1918 an explosion caused by a faulty timer on a bomb sent lewisite gas across a field and toward the homes of residents near the American University campus, including that of former senator Nathan B. Scott. Scott, his wife, and his sister-in-law were gassed while sitting on their porch. Not long after the accident, the lewisite work at the university ceased and the Chemical Warfare Service ordered production moved to a secret plant twenty miles east of Cleveland, in Willoughby, Ohio.

The Willoughby plant was located on the site of the former Ben-Hur Motor Company. Soldiers first arrived at the site at the end of July 1918 and found that, although the office building was mostly completed, the plant floor had never been graded. A plumbing system had been installed, but there were no working sewer or water lines in the facility. The pipes had frozen over the previous winter, so the system had to be removed and totally redone. The electrical wiring was only partially complete and had been installed haphazardly, so it had to be removed and reinstalled.

Finding contractors to remodel the plant was difficult. Most of the nearest ones were located in Cleveland, and transportation, food, and housing for construction workers had to be arranged. Further, the workmen wanted to be reimbursed for the cost and time of traveling. Fortunately, Willoughby contractors were eventually found and hired, but only after appealing to the town’s mayor. The workers took from July 28 to mid-August to remodel the factory. Security was tight. A barbed-wire fence was erected around the facility, and guards maintained a twenty-four-hour watch. Klaxon horns and an alarm system were also installed to warn of the presence of intruders. Eventually the site included four barracks to house the twenty-two officers and 542 soldiers working at the facility, a mess hall, and a forty-eight-bed hospital (neither of the two deaths that occurred at the plant was from the effects of lewisite).

The soldiers working there initially were not allowed to leave the grounds except for meals, and all their mail went through a post office box, No. 426, in Cleveland, without any mention of Willoughby. On August 10, Maj. Gen. William L. Sibert, director of the Chemical Warfare Service, visited the Willoughby plant and told the soldiers that as long as they maintained secrecy about the plant, the army would allow them to enter the town of Willoughby, but they were still not permitted to go to Cleveland due to the fear of espionage.

Each of the soldiers at the facility was issued a gas mask that had to be kept nearby or worn in the alert position at all times. Many of the men worked to the point of complete exhaustion, trying to make the plant operational as soon as possible because the government had ordered three thousand tons of lewisite to be ready for a planned spring 1919 offensive against the Germans.

In September 1918, the War Department realized that, in order to satisfy all its planned uses for lewisite, production had to be doubled. That entailed a large expansion at Willoughby. New equipment was ordered, and the plant layout changed to make room for it. Amazingly, by November, just five months after construction started, the plant had begun full production of ten tons of lewisite per day.

On November 11, however, the war suddenly ended. Early in December, the men began dismantling, inventorying, and disposing of the plant’s equipment and materials. By March 1919, all of the plant’s soldiers were gone.

From the time the soldiers had arrived in Willoughby until the day they left, the town’s government, Red Cross, and residents were all extremely helpful and friendly. They often hosted receptions and gatherings for the soldiers, provided pies for their Thanksgiving dinner, and even donated a grand piano to the boys. When townspeople asked the soldiers what they were doing at the Willoughby plant, the soldiers responded that they were working on a formula for rubber, which explained the strong odors that the plant emitted.

According to Nate A. Simpson, one of the soldiers assigned to the plant, the army did not reassign a single soldier from the top-secret facility until the war was over. The plant became known as the ‘mousetrap’ because once you were there, you knew you were not going to leave until the war was over.

There are different stories pertaining to what happened to the gas produced at Willoughby after the armistice was signed. Some say the plant never produced chemicals, but in 1957 workmen dug up several laboratory bottles containing lewisite on the grounds of the old facility. Others suggested that the army hauled between a few tons and 150 tons of lewisite to the Atlantic Ocean by train in big steel casks that were under guard. There the material was carefully transferred onto barges and dumped at sea. Another account suggests that 150 tons of lewisite was en route to Europe when the war ended, and the ship transporting it was subsequently sunk rather than be allowed to return the deadly chemical to the United States.

Two British scientists, Stanley Green and Thomas Price, published the formula for lewisite in The Journal of the Chemical Society in 1921. According to General Fries in his book Chemical Warfare, the formula’s publication was unfortunate because the highly secret compound became known throughout the world, perhaps allowing Japan and Germany to learn about it and develop manufacturing techniques.

Until 1943 lewisite was thought to be equal to or better than mustard gas. However, U.S. Army tests done during World War II on lewisite found that unless the human subjects were defenseless or unconscious, they immediately felt the pain of exposure and would leave the area and protect themselves. Because mustard does not cause immediate effects, soldiers were more likely to be exposed for longer periods. Army testers also found that it was very difficult to get effective concentrations of lewisite vapor. Furthermore, the development of British anti-lewisite, which can prevent burns caused by lewisite and reverse its systemic effects, was believed to reduce the combat effectiveness of the chemical weapon. For those reasons, the U.S. military has not considered lewisite an effective chemical agent since World War II.

Other countries apparently did not agree with this evaluation. For example, the Soviet Union produced huge quantities of the material, disposing of approximately twenty thousand tons of it in the Arctic Sea during the late 1940s and ’50s. More recently, a plant specifically designed to incinerate lewisite and mustard gas has become operational at Gorny, Russia.

Although chemical weapons were not used in major combat during World War II, the Japanese used lewisite and mustard gas in China during most of the war years. In one horrible experiment, prisoners were forced to drink ‘crude water,’ which was a liquid form of lewisite or mustard gas. In addition, more than thirty-five hundred Chinese died in October 1941 at Ichange in the Yangtze Valley after a suspected lewisite attack. Lewisite artillery shells were found on New Guinea, indicating that the Japanese had planned to use the agent against Allied forces. Germany also conducted lewisite experiments on concentration camp inmates.

From 1940 to ‘43, the United States produced lewisite at a small pilot plant at Edgewood Arsenal and then later at Huntsville, Pine Bluff, and Rocky Mountain arsenals. About twenty thousand tons of the agent had been produced before the plants were shut down. Along with disposing of the enemy stockpiles, the United States also dumped most of its own lewisite into the Atlantic and Pacific oceans after the war. One of the 1948 dumping operations was referred to as Operation Geranium because lewisite has a geraniumlike odor.

More recently, Iraq allegedly used lewisite and a mustard gas-lewisite mixture against Iran in the 1980s. The deadly chemical was detected in three separate 1991 instances during the Persian Gulf War, and at least one Iraqi prisoner of war claimed in February 1991 that Iraq had lewisite-filled munitions in its inventory.

A 1999 article in Environmental Health Perspectives reported that lewisite is still produced in very limited quantities in the United States (presumably just for military preparations) and the country’s remaining stockpile is stored at Desert Chemical Depot in Utah. And recently in Washington, D.C., lewisite and mustard agents, hastily buried and forgotten when the American University Experimental Station closed down, have been discovered in the ground, requiring a hazardous waste cleanup operation by the army’s Corps of Engineers.

Lewisite, the major American contribution to chemical weapons development during World War I, has had an amazing history, from its inadvertent discovery by a priest in 1903 to its presence a hundred years later in the arsenals of some countries. Most notably, North Korea has an estimated twenty-five hundred to five thousand tons stockpiled. Whether lewisite will eventually be used in combat situations or as a terrorist weapon — and, if so, how effective it would be — remains to be determined.

This article was written by Joel A. Vilensky and Pandy R. Sinish and originally published in the Spring 2005 edition of MHQ. Joel A. Vilensky and Pandy R. Sinish are the authors of Dew of Death: The Story of Lewisite, America’s World War I Weapon of Mass Destruction. For more great articles, subscribe to MHQ: The Quarterly Journal of Military History today!

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Tags: 20th - 21st Century, Weaponry

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