Ball Bearings

Importance of the tiny ball bearing and how an American mass bomber raid on also Schweinfurt put half of the Nazi's ball bearing factories out of business. (WF, 41 13; 20 minutes) 32, 41 Castaway U.S. Department of the Navy, 1944. hows How to land in ocean, to lash equipment to raft; live on rubber ate raft, dry island, inhabited island; find for food and water; deal with natives