A child and his dog watch black smoke billowing into the sky as police officers stand nearby Sunday Dec. 11, 2005 following an explosion at one of Britain's largest oil depots in Hemel Hempstead, 40km (25 miles) north of London early Sunday, hurling balls of fire skyward, shattering windows and blanketing nearby houses with smoke. Thirty-nine people were injured, but only two were seriously hurt. The blasts appeared to be accidental, police said. (AP Photo/Alastair Grant)