 German intelligence selected the target based on knowledge of their own industry's vulnerbaility to the loss of rubber production.The plant was heavily damaged.The oil targets at Saratov received 181 tons of bombs from 12–15 June—SU 66 75 and SU 65 76 were bottle-necks, for despite the vast oil reserved in the Soviet Union, few plants could refine crude oil into high aviation octane fuel.