http://www.nytimes.com/2014/10/24/world/middleeast/isis-said-to-use-chlorine-gas-against-iraqi-police-officers.html 2014-10-24 04:44:10 U.S. Is Investigating Report That Islamic State Used Chlorine Gas American officials said they were examining a report that 11 police officers were sickened after a bomb dispersed chlorine gas last month near Balad, north of Baghdad. === BAGHDAD — American security officials said Thursday that they were looking into a new report that Islamic State militants had used chlorine gas as a weapon against Iraqi police officers last month near Balad, north of Baghdad. According to the accounts of the officers, fighters for the Islamic State, also known as Unconfirmed reports of improvised bombs made with chlorine gas and used by militants have arisen from time to time since the Islamic State began seizing territory in A spokesman for the “We continue to take all allegations of C.W. use — and in particular these recent allegations regarding the use of chlorine as a chemical weapon — very seriously,” he said. “We are aware of the reports but cannot confirm details and are seeking additional information. The use of chlorine as a chemical weapon is an abhorrent act.  These recent allegations underscore the importance of our work to eliminate chemical weapons in this volatile region.” The Organization for the Prohibition of Chemical Weapons noted in September that chlorine gas was being used in parts of the conflict in Syria, where the Islamic State is also fighting. The United States has attributed those attacks to the government of President Bashar al-Assad. If the new report is confirmed, the use of chlorine gas by the Islamic State would be the latest iteration of a weapon that has been employed by Iraq’s Sunni militants since the years following the American invasion in 2003. During the 2000s, the weapons were used intermittently in attacks against American and Iraqi forces and against civilians. In early 2007, there appeared to be a The crude bombs were often made by mixing conventional explosives with cylinders of chlorine compounds usually used for water purification. Sometimes insurgents would pack explosives on chlorine tanker trucks, or on dump trucks full of chlorine, turning the vehicles into giant, mobile bombs. These bombs were often ineffective as chemical weapons, and wounds that resulted from their use were most often related to the shrapnel from the conventional explosive used to try to disperse the chlorine, according to American service members who encountered the weapons during their tours.  At times, however, the chlorine was distributed in harmful ways, irritating airways and eyes and causing burns. In the worst cases, Iraqi civilians and American troops suffered inhalation injuries. This type of  wound received enough attention in the United States military that the Navy came to recognize injuries caused by chlorine gas and explosives as worthy of a Purple Heart, the medal awarded for battlefield wounds.