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NUMERICAL INDEX
TFNo.
feeding (15 min — 1942 — Film Reference — From US Office of Educa^ tion Film No. 20).
25-626 Drilling and Tapping a Cast Steel Valve Body
Techniques used when drilling and tapping blind holes in cast .steel on a radial drill — Drill jig with loose bushings used for locating holes (19 min — 1942 — Film Reference — From US Office of Education Film No. 22).
25-627 Drilling to a Lay-out and Spotfacing a Cast Iron Valve Body
Drilling and spotfacing holes in flange of cast iron valve body — Details of setting up work in machine — Adjusting feed and speed — Checking work for accuracy (15 min — 1942 — Film Reference — From US Office of Education Film No. 23).
25-628 Machining a Tool Steel V Block
Laying out material — Seating block in vise — Selecting cutting tools — Adjusting shaper — Precautions (20 min — 1942 — Film Reference—From US Office of Education Film No. 21).
30-1493 Prisoner of War for Intelligence
Reasons for taking prisoners in combat — Valuable information obtained through proper questioning — Clever Uise of interrogation (27 min — 1948 — Film Reference).
30-1494 Production of Combat Intelligence
On basis of division mission, G2 directs production of combat intelligence for division mission — Piecing together fragments of information on makeup of enemy forces — Equipment — Positions — Complete picture for plan of action (17 min — 1948 — Film Reference).
30-1523 Safeguarding Military Information
Necessity of military and civilian personnel keeping eyes open and mouth .shut (16 min— 1949).
30-1543 The Aggressor Force
American soldiers, specially trained and equipped, enact part of aggressor (26 min — 1950 — Film Reference).
30-1545 Unit Censorship
Importance of unit censor's activities in over-all military censorship program — Necessity for unit censorship in time of war — Duties and responsibilities of unit censors — Use of blue envelope — Procedure for having unofficial film processed (26 min — 1949).
30-1565 Military Censorship
Need for censorship in time of war — Ca.se histories — Influence of strict censorship upon succes.sful outcome of mission (20 min — 1949).
30-1569 Lock Security (U)
(41 min— 1949— Film is classified CONFIDENTIAL.)
30-1607 Surveillance (U)
(35 miu— 1950— Film is classified CONFIDENTIAL.)
30-1645 Investigative Sound Devices (U)
(30 min— 1950— Film is classified CONFIDENTIAL.)
409