Suit says Guardsman , contractors exposed to cancer - causing chemical at Iraq plant . Suit alleges KBR knew of the contamination and did nothing to protect soldiers . Some Guardsmen suffer from nasal tumors , respiratory problems . Suit says it 's not to blame for the unsafe environment at plant .
Suit says Guardsman , contractors exposed to cancer-causing chemical at Iraq plant . Suit alleges KBR knew of contamination threat and did nothing to protect soldiers . Some Guardsmen suffer from nasal tumors , respiratory problems . KBR says it 's not to blame for creating unsafe conditions at plant .