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Estimating Gold Values in Placer Gravels

The single most important question to be answered when evaluating a placer deposit is: “How much is it worth?” Accurate sampling of placer gravels is essential to obtain a reasonable estimate of the total gold values contained in the deposit.

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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.

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The “battle lines” are being clearly drawn. By the time you receive this issue both party conventions will take place within just a few weeks and there will be only four months until the final vote.

Search Coils and Techniques


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Pacific Island Gov'ts Focus on Undersea Mining


Pacific Island nations have started devising regulatory laws to help create a new industry in this near-resourceless region: mining the sea floor.

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Blast From the Past


Dredging Up a Paystreak - August 1983

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