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as camping, picnicking, riding, hiking, sightseeing, nature study, photograpy, boating, hunting, and fishing. Many of the public lands are, and will remain in their natural state because of factors such as topography, climate, and remote location. The Bureau considers public recreation values in making decisions affecting use of the public lands. It cooperates with Federal, State, and local recreation agencies in providing lands and facilities to improve the public recreation opportunities and is presently inventorying all public lands having significant values for public recreation. For example, practically all of the State, Federal, and local parks have been served out of the public lands and the Arizona State Highway Department maintains over 400 rest stops located largely on public lands. State and local recreation agencies plans include many thousands of acres of public domain for future recreational developments. In certain areas, such as Lincoln County, Nevada, where a 6-unit campground has been installed, recreation sites on public lands are being developed by the Bureau under the Accelerated Public Works Program. 3. Mining. This area has a significant mineral industry based upon the production of copper, lead, zinc, gold, and silver. In addition to these, many other metallic and nonmetallic minerals such as lime, gypsum, etc., are produced on the public lands. The Bureau administers these resources under the provisions of the general mining laws, the mineral leasing acts, and the mineral materials act. The public lands provide the greatest source of road building material in the area. Decorative and building stone 16Epson Perfection 4870 Photo, 400 dpi, 8 bit, 13,987,840 byte