Introductory titles describing four parts.
01:29:48 Opening titles: Defense Atomic Support Agency Presents. Operation Hardtack - Military Effects Studies, Pt. One Basic Effects Structures & Material.
01:30:09 Man walking w/ geiger counter out of partially collapsed quonset hut. Chart of film purpose: study of underground motion, radiation studies, electromagnetic pulse studies. Ground Motion & high over pressure of surface bursts 17 kiloton Cactus, & 1.4 megaton Koa to design hard protective structures, etc.
01:31:10 Cactus blast. Koa blast.
01:31:32 Crane placing concrete instrument holders, placed at surface & burying underground. Barrels placed holding gauges. Other measuring instruments.
01:32:55 Aerial over craters. Animated diagram of Koa shockwave & resulting pressure at various distances. Same w/ Cactus shot. Graphs comparing effect on Nevada soil & coral soil; and between both explosions on Eniwetok.
01:36:54 Radiation test data chart. Men attaching radiation detector foils on land & on ships or buoys. Floating buoys. Cameramen silhouetted by blast.
01:37:44 Chart (brief). Rockets raised, fired for sampling. B-57 & WB-50 aircraft in flight to sample.
01:39:12 B-57 on ground, filter holder removed by long poles & put into container, filter into smaller lead pig.
01:39:49 Chart, animated illustration of instrument placement to study electromagnetic & ionosphere interruption.
01:40:41 Man to trailer w/ laboratory inside. CU instruments, dials, switches, gages. Animation showing signals & measurements.
01:41:39 Chart explaining experiments for aircraft & underground structures, electronic fuzes / fuses, skin coverings & uniforms, metal ablation.
01:42:15 B-52 bomber; A4D & FJ4 carrier planes that were tested. A4D & FJ4 taking off seen from control tower. B-52 in flight from beneath w/ bomb bay doors opening & closing, turning sharply & descending away; seen from above in flight. Diagram showing force point on wng, illustration of flight.
01:43:48 B-52 landing toward camera on island. Illustration of A4D seen from above. Cross section of wing w/ passing of shock waves & response. Continued...
Scientific Atomic Tests; Research; Technology; Nuclear Testing; Atomic Bomb Testing; Pacific Islands;
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Introductory titles describing four parts. 01:29:48 Opening titles: Defense Atomic Support Agency Presents. Operation Hardtack - Military Effects Studies, Pt. One Basic Effects Structures & Material. 01:30:09 Man walking w/ geiger counter out of partially collapsed quonset hut. Chart of film purpose: study of underground motion, radiation studies, electromagnetic pulse studies. Ground Motion & high over pressure of surface bursts 17 kiloton Cactus, & 1.4 megaton Koa to design hard protective structures, etc. 01:31:10 Cactus blast. Koa blast. 01:31:32 Crane placing concrete instrument holders, placed at surface & burying underground. Barrels placed holding gauges. Other measuring instruments. 01:32:55 Aerial over craters. Animated diagram of Koa shockwave & resulting pressure at various distances. Same w/ Cactus shot. Graphs comparing effect on Nevada soil & coral soil; and between both explosions on Eniwetok. 01:36:54 Radiation test data chart. Men attaching radiation detector foils on land & on ships or buoys. Floating buoys. Cameramen silhouetted by blast. 01:37:44 Chart (brief). Rockets raised, fired for sampling. B-57 & WB-50 aircraft in flight to sample. 01:39:12 B-57 on ground, filter holder removed by long poles & put into container, filter into smaller lead pig. 01:39:49 Chart, animated illustration of instrument placement to study electromagnetic & ionosphere interruption. 01:40:41 Man to trailer w/ laboratory inside. CU instruments, dials, switches, gages. Animation showing signals & measurements. 01:41:39 Chart explaining experiments for aircraft & underground structures, electronic fuzes / fuses, skin coverings & uniforms, metal ablation. 01:42:15 B-52 bomber; A4D & FJ4 carrier planes that were tested. A4D & FJ4 taking off seen from control tower. B-52 in flight from beneath w/ bomb bay doors opening & closing, turning sharply & descending away; seen from above in flight. Diagram showing force point on wng, illustration of flight. 01:43:48 B-52 landing toward camera on island. Illustration of A4D seen from above. Cross section of wing w/ passing of shock waves & response. Continued... Scientific Atomic Tests; Research; Technology; Nuclear Testing; Atomic Bomb Testing; Pacific Islands;