TEHRAN, March 6, 2003. /from RIA Novosti correspondent Nikolai Terekhov/. - Iraq has dropped bombs hitting 2,500 oil fields that cover a vast area. According to the IRNA agency, the bombing near Sharjeh resulted in the explosion of an oil refinery near Kirkuk. Some oil-bearing wells were mined with antitank mines. The Iraqi Army units are ditching around near Baghdad and Kirkuk round the clock to resist the US Army.