1974 VIEW INTO BLOCK AREA SHOWING KEY MECHANISM, NOTE FLOOR SEPARATION AT THRESHOLD AND KEY-WINDING MECHANISM
1974 VIEW SHOWING KEY-WINDING MECHANISM FOR ROTATING CELL BLOCKS
1974 SHOWING FOOD PASS-THROUGH TO CELLS
1974 VIEW OF CIRCULAR ROOM IN CELLAR SHOWING STEEL SUPPORT STRUCTURE FOR ROTATING CELL BLOCKS
1974 CLOSE-UP VIEW SHOWING STEEL PEDESTAL COLUMN TO SUPPORT ROTATING CELL BLOCKS
1974 VIEW OF STEEL PEDESTAL COLUMN TO SUPPORT ROTATING CELL BLOCKS