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Identifying the Noble Metals Simple Tests That Work

Using a porcelain evaporating dish, place concentrates or head ore, equal to a tablespoon, in 60cc of aqua regia. Boil almost to dry, then add 10cc HCl (hydrochloric or muratic acid) and heat for a few minutes, and then add 30cc of water and bring to boil. Let cool while the solids are being allowed to settle. Using a pipette...

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U.S. Dept. of Interior Inspectors in Arizona


Glynn Burkhardt, president of the Arizona Small Mine Operators Association, has a small mine outside of Tucson, Arizona. He recently received a visit from U.S. Department of Interior...

Melman on Gold & Silver


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Colorado Uranium Mining in the 1950s Boom


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The Bawl Mill


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Feds Eye Restrictions on AZ Archaeological Sites


The Interior Department is proposing a moratorium on new mining and grazing in a 176-square-mile area of central Arizona dotted with American Indian ruins, a possible first step toward a new national monument.

President Bush: Put ANWR Drilling in Energy Bill


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