COPPER—MINING AND SMELTING
ates the main steps in extracting pure copper from ore. Depicts processes of blasting, loading and disposing of waste rock, loading ore in railroad cars, and crushing and washing, with emphasis on the work of the miners. For primary and middle grades. Credits: Educational collaborator, John R. Lewis
Registration MP14 No renewal found
- Term began
- 1950-02-06
- Claimant
- Viking Pictures Corp
- Class
- MP — published motion picture other than a photoplay (numbering series begun Jan. 1950)
- Finding
- no renewal entry found for 1977-1979 in the CCE motion-picture renewal sections or in the Copyright Office renewal records 1978-2025
- In the public domain since
- 1 January 1979 (end of the 28th year, no renewal)
A renewal would have appeared in the Copyright Office's renewal registrations 27 to 29 years after the term began. Those volumes are loaded and no matching renewal was found. A work published 1931–1963 that was not renewed entered the public domain at the end of its 28th year.
A renewal had to be filed in the 28th year and would be listed in the 1977 or 1978 volume; volumes searched: 1977, 1978, 1979.
Catalog entry
Catalog of Copyright Entries, Third Series, Parts 12–13: Motion Pictures, 1950, Internet Archive catalogofcopyri341213libr (OCR text), lines 3650–3662.
illustrates the main steps in extracting pure copper from ore. Depicts processes of blasting, loading and disposing of waste rock, loading ore in railroad cars, and crushing and washing, with emphasis on the work of the miners. For primary and middle grades. Credits: Educational collaborator, John R. Lewis. © Viking Pictures Corp.; 6Feb50 (in notice: 1949); MP14.
Copies on the Internet Archive
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