Three of the five ball bearings plants were in range, the synthetic rubber plant at Yaroslavl (23 percent of output) and oil refineries along with steel plants were all considered. Surviving intelligence maps show the crude oil and ball bearing plant at Saratov was also considered. In the end phase, the production of tanks and armoured vehicles received the weight of the attacks.
Three of the five ball-bearing plants were within reach; the synthetic rubber plant at Yaroslavl (23 percent of output) and oil refineries along with steel mills were all considered. Surviving intelligence maps indicated that the crude oil and ball-bearing plant in Saratov was also taken into account. In the final phase, the production of tanks and armored vehicles received significant attention.