Agent Orange

Agent Orange was a powerful mixture of chemical defoliants used by U.S. military forces during the Vietnam War to eliminate forest cover for North Vietnamese and Viet Cong troops, as well as crops that might be used to feed them. The U.S. program of defoliation, codenamed Operation Ranch Hand, sprayed more than 19 million gallons of herbicides over 4.5 million acres of land in Vietnam from 1961 to 1972. Agent Orange, which contained the chemical dioxin, was the most commonly used of the herbicide mixtures, and the most effective. It was later revealed to cause serious health issues–including tumors, birth defects, rashes, psychological symptoms and cancer–among returning U.S. servicemen and their families as well as among the Vietnamese population.

From 1961 to 1972, the U.S. military conducted a large-scale defoliation program aimed at destroying the forest and jungle cover used by enemy North Vietnamese and Viet Cong troops fighting against U.S. and South Vietnamese forces in the Vietnam War. U.S. aircraft were deployed to spray powerful mixtures of herbicides around roads, rivers, canals and military bases, as well as on crops that might be used to supply enemy troops. During this process, crops and water sources used by the non-combatant peasant population of South Vietnam could also be hit. In all, Operation Ranch Hand deployed more than 19 million gallons of herbicides over 4.5 million acres of land.

The most commonly used, and most effective, mixture of herbicides used was Agent Orange, named for the orange stripe painted on the 55-gallon drums in which the mixture was stored. It was one of several “Rainbow Herbicides” used, along with Agents White, Purple, Pink, Green and Blue. U.S. planes sprayed some 11 million to 13 million gallons of Agent Orange in Vietnam between January 1965 and April 1970. According to the U.S. Department of Veterans Affairs (VA), Agent Orange contained “minute traces” of 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD), more commonly known as dioxin. Through studies done on laboratory animals, dioxin has been shown to be highly toxic even in minute doses; human exposure to the chemical could be associated with serious health issues such as muscular dysfunction, inflammation, birth defects, nervous system disorders and even the development of various cancers.

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