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MOTION PICTURES 109 Machining a Cast Iron Rectangular Block U.S. Office of Education, 1942. (Machine Shop Work Series. Operations on the Shaper No. 2) Use of parallels to set a block in a shaper vise for machining all six surfaces square with each other; how to make finishing cuts; set the machine for proper ram stroke and speed, cross feed, and depth of cut. Sup- plementary filmstrip, same title, also available. (OE 20; 25 minutes) 32, 41 Machining a Tool Steel V Block U.S. Office of Education, 1942. (Machine Shop Work Series. Operation on the Shaper No. 3) How to lay out work for machining on a shaper: set up and position the ram stroke; and machine V grooves and rectangular slots. Supple- mentary filmstrip, same title, also avail- able. (OE 21; 21 minutes) 32, 41 Machining Laminated Plastics U.S. Office of Education, 1945. (Plastics Series No. 10) How to machine typical laminated part; cut the tube stock to length on a circular saw; turn the out- side diameters on a lathe; machine in- side diameters by boring with a lathe; finish the machining on a milling ma- chine. Animation. Supplementary film- strip, same title, also available. (OE 475; 19 minutes) .... 32, 41 Machining Work Held in Chuck: Use of Reference Surfaces U.S. Office of Education, 1944. (Machine Shop Work Series. Operations on the Engine Lathe No. 12) How to select and machine surfaces to be used for refer- ence; set up a work-piece accurately to the reference surfaces in a lathe chuck; and use a boring bar to machine several internal surfaces. Supplementary film- strip, same title, also available. Portu- guese version "Elabor.ac.ao de Uma Pec.a No Prato Ou Bucha" and Spanish ver- sion "Elaboracion de Una Pieza en el Plato" also available. (OE 60; 24 min- utes) 32, 41 Made in Occupied Japan U.S. Department of the Army, 1949. Revival of pottery industry in Japan; various processes involved in making pot- tery. (M 7561; 14 minutes) 12, 41 Magic Bullets U.S. Public Health Service, 1943. Dr. Paul Ehrlich discovers a cure for syphilis after years of experimenting with arsenic and bismuth. Short edited version of "Dr. Ehrlich's Magic Bullets." For gen- eral public. (30 minutes) 26 Magnesium: Metal From the Sea U.S. Bureau of Mines in cooperation with Dow Chemical Co., 1944. Designer's dreams of tomorrow made possible by magnesium; production processes; in- dustrial and domestic uses. (23 minutes) 17 Maintaining Good Working Condi- tions U.S. Office of Education, 1944. (Prob- lems in Supervision Series) Two super- visors, Larry Daniels and Joe Graff, describe specific ways, dramatically re- enacted, they used in improving working conditions. (OE 152; 9 minutes) 32, 41 Maintaining Quality Standards U.S. Office of Education, 1944. (Prob- lems in Supervision Series) Bert Bowdler, a supervisor, learns that quality as well as quantity production is necessary, and how such quality standards can be achieved and maintained. (OE' 164; 10 minutes) 32, 41 Maintaining Workers 9 Interest U.S. Office of Education, 1944. (Prob- lems in Supervision Series) Dramatized instances of employees doing poor work because their jobs do not interest them, and what the supervisor should do to