The Making of the Atomic Bomb: 25th Anniversary Edition

by Richard Rhodes

The United States Army was slow to respond to gas warfare because it assumed that masks would adequately protect U.S. troops. The civilian Department of the Interior, which had experience dealing with poison gases in mines, therefore took the lead in chemical warfare studies. The Army quickly changed its mind when the Germans introduced mustard gas in July 1917. Research contracts for poison-gas development went out to Cornell, Johns Hopkins, Harvard, MIT, Princeton, Yale and other universities.365 With what a British observer could now call “the great importance attached in America to this branch of warfare,” Army Ordnance began construction in November 1917 of a vast war-gas arsenal at Edgewood, Maryland, on waste and marshy land.366, 367 The plant, which cost $35.5 million—a complex of 15 miles of roads, 36 miles of railroad track, waterworks and power plants and 550 buildings for the manufacture of chlorine, phosgene, chlorpicrin, sulfur chloride and mustard gas—was completed in less than a year. Ten thousand military and civilian workers staffed it. By the end of the war it was capable of filling 1.1 million 75-mm gas shells a month as well as several million other sizes and types of shells, grenades, mortar bombs and projector drums. “Had the war lasted longer,” the British observer notes, “there can be no doubt that this centre of production would have represented one of the most important contributions by America to the world war.”