DUAL PURPOSE TREES
National Archives
Education
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About
DUAL PURPOSE TREES Produced: 1925
Description Shows proper and improper methods of "cupping" pine trees for turpentine. Emphasizes that only mature trees should be used, that slashes should be shallow, and that trees should be uncupped periodically to insure longer tree life and more productive turpentine yield.
https://catalog.archives.gov/id/7216
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- Internet Archive, in FedFlix: US government films
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- National Archives
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