Image talk:NuMI magnetic horn, end view.jpg
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It's not clear to me that this image is in the public domain. While Fermi Lab is a ".gov" website, its images are under copyright as it is managed, not by the government, but instead by a private company, the Fermi Research Alliance, LLC: http://www.fra-hq.org/
The horn photograph is from this page: http://www.fnal.gov/pub/presspass/vismedia/gallery/homepage_gallery.html
That page references this one:
The images included in this database are the property of the U.S. Department of Energy. Approval for use of these photos for publication in any medium is required from the Office Of Public Affairs. Email rhianna@fnal.gov http://www.fnal.gov/pub/presspass/vismedia/
So, are you really sure that this is public domain? Or do you need to email rhianna@fnal.gov before using this image?

