Placer Gold in Arizona
July 2002 by Edgar B. Heylmun, PhDArizona is better-known for copper than for gold, but there are a number of dry placers in the western and southern parts of the state. A prolonged drought at the time of this writing has made the placers the driest they have been in recorded history. A good gold panner can find colors in many gulches and benches, far more than those that have been described in reports.
Centrifugal bowls are very efficient, and with proper operation they can consistently achieve gold recoveries above 95% with gold of about 50 mesh size.
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Federal and state regulatory agencies often cite mercury and methyl mercury in our waterways as a major factor for further restrictions on placer mining, and on suction gold dredge mining, in particular. However, these regulatory agencies are minimizing selenium and its neutralizing effects.
There are a lot of differences between the operations of successful mining companies and ones that become financial failures, but one of the consistent key differences between them is their sampling programs.
If there is one word which seems to describe the past month on so many fronts, it is the word "dysfunctional." The tone was set when "American Beauty" won the Academy Award for "Best Movie."
The local administration in the Almaty region has issued an appeal for people to "lend" their gold to the government. Organizers are using the slogan: "Help us in difficult times."
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