Creator:H. Tracy Hall Date Created:APRIL 30, 1965 Place Created: Keywords:300 TON,X-RAY PRESS,RETAINER RING Context:300 TON X-RAY PRESS RETAINER RING ************************************************** 300 TON X-RAY PRESS RETAINER RING MAKE 4 EACH OF 4340 STEEL Rc 28 - 32 CADMIUM PLATE APRIL 30, 1965 H. Tracy Hall