Brazilian quartz goes to war
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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.
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- 16mm Filmography (legacy record) — title, year, length, format, color, sound, genre, description, catalog record
- University of Georgia Brown Media Archives · record ↗ — title, format, description
- 16mm Filmography editors — creator
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