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76 U.S. GOVERNMENT FILMS strip, same title, also available. (OE 223; 22 minutes) 32, 41 Grinding and Facing a Blind Hole U.S. Office of Education, 1944. (Machine Shop Work Series. Operations on the Internal Grinder No. 3) How to mount and dress the wheels on the two-spindle grinder; plunge-grind the bore and ad- just for taper; and grind the shoulder and flange parallel at right angles to the bore. Supplementary filmstrip, same title, also available. (OE 79; 17 minutes) 32, 41 Grinding Multiple-Point Carbide Tools U.S. Office of Education, 1945. (Machine Shop Work Series. Carbide Cutting Tools No. 3) How to resharpen by grinding a dull carbide milling cutter; grind in- dividual teeth off-hand; circle-grind; surface-grind; and finish surfaces and edges by honing. Supplementary film- strip, same title, also available. (OE 243; 20 minutes) 32, 41 Grinding Single-Point Carbide Tools U.S. Office of Education, 1945. (Machine Shop Work Series. Carbide Cutting Tools No. 2) How to semi-finish and finish- grind a dull tool; rough-grind a chipped or broken tip; grind a newly brazed tool; and grind a chip breaker. Supplementary filmstrip, same title, also available. (OE 242; 26 minutes) 32, 41 Grinding Thin Discs U.S. Office of Eduction, 1945. (Machine Shop Work Series. Operations on the Surface Grinder No. 5) How to true the grinding wheel; load and operate the magnetic chuck; rough-grind the discs; finish-grind the discs to precision meas- urements; and check for accuracy and parallelism. Supplementary filmstrip, same title, also available. (OE224; 15 minutes) 32, 41 Griscom-Russell, How It Works. Pan 1 U.S. Department of the Navy, 1944. (Dis- tilling Plants Series. Low Pressure Type) Principles of operation of low-pressure distilling plant (Griscom-Russell): de- velopment of a simple effect distilling plant; its parts and their function. Ani- mation. (MN 3706-a; 13 minutes) 41 Griscom-Russell, How It Works. Part 2 U.S. Department of the Navy, 1944. (Dis- tilling Plants Series. Low Pressure Type) Double effect distilling plant; its parts, construction and operation; various units of typical plant; flow of water, steam, vapor and condensate through the sys- tem. Animation. (MN 3706-b; 18 min- utes) 41 Ground Controlled Approach U.S. Department of the Navy, 1949. Principles and operation of GCA on field and in a plane. (MN 6694; 38 minutes) 41 Ground Crew Safety U.S. Department of the Air Force, 1944. Causes and correction of common hangar safety hazards: causes of spontaneous combustion; "dont's" when working with batteries, torches, gasoline, drop chords, etc.; precautions when refueling and starting plane. (TF 1-3345; 17 minutes) 7 The Ground Team: Designed for Victory U.S. Department of the Army, 1945. How World War II achievements of infantry, artillery, and airborne troops derived from coordinated action and teamwork. Revision. (M 1275; 9 minutes) 41 Ground Ways U.S. Department of the Navy, 1945. (Shipbuilding Skills Series. Preparation for Stern Launching) Purpose and prin- cipal parts of land and underwater ways; reconditioning of forward port side tim-