1 U.S. Bureau of Mines in cooperation with Phelps Dodge Corp
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Filmography in the catalog
Credited on 1 film (1938) — matched by name in the Creator or Credits field.
| Year ▼ | Title | Creator | Length | Format | Color | Sound |
|---|---|---|---|---|---|---|
| 1938 | Copper Leaching and Concentration | 1 U.S. Bureau of Mines in cooperation with Phelps Dodge Corp | 16mm |