Brazilian quartz goes to war

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Date
1943
Summary
Emphasizes the role quartz plays in war communications, showing how a wafer of its crystal makes possible the simultaneous broadcasting of many stations without overlapping. Pictures the hard manual labor involved in mining Brazilian quartz, the inspection, the exportation of most of it to the United States, and the laboratory cutting of it to fit the complex instruments of World War II. 
Publishers
Indiana University Audio-Visual Center; U.S. Office of Education
Genre
Educational
Subject
Quartz mines and mining -- Brazil ; Quartz crystals ; Radio -- Equipment and supplies ; World War, 1939-1945 -- Equipment and supplies ; World War, 1939-1945 -- Communications ; Communications, Military.
Collection
Government films
Unit
IUL Moving Image Archive
Language
English
Rights Statement
No Copyright - United States
Physical Description
1 Film (0:10:00); 16mm
Notes
Gift to the IUB Libraries from Instructional Support Services. 
Other Identifiers
IULMIA Film Database: 40000003095777; Other: GR00467239; OCLC: ocn989125646; OCLC: 989125646

Access Restrictions

This item is accessible by: the public.