Works by the U. S. Government are not eligible for U. S. copyright protection. In some cases, however, the U.S. Government may have been assigned rights to a work. It is the researcher's obligation to determine and satisfy copyright or other use restrictions when publishing or otherwise distributing materials found in these digital collections. Transmission or reproduction of protected items beyond that allowed by fair use requires the written permission of the copyright owners. Researchers must make their own assessments of rights in light of their intended use.
Arizona Mines and Minerals - Federal Materials
