Selenium, Mercury and Suction Dredging—Studies Contradict CA State Water Resources Board
April 2013 by Scott HarnFederal 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.
Bela and Barbara Kovacs began prospecting for gold about seven years ago as a family orientated outdoors activity. A welder by trade and lured by the simple fact that beach sands can contain small bits of precious metals, Bela decided a few years ago to build a sand sucking contraption that can sift the shoreline for anything worth keeping.
The next morning, I retrieved the compressor and again attacked the sticky head bolt. As if by magic (and some applied physics) the head bolt sighed and finally broke loose.
The plea from State Police Chief Pete Kassetas follows what authorities believe is the latest death related to the effort to uncover Forrest Fenn’s treasure.
As he was working near the extreme low end of the ground sluicing, I heard a yell through my headphones. Making my way down to him I could see the smile from a long distance.
I like to think in terms of “conductive mass” because it is a combination of both the conductivity of the metal and the size of the target that determine how a detector sees conductivity.
The Bawl Mill • Ask the Experts - processing plants that can extract rare earth metals • Ask the Experts - what does MDB&M stand for? • Ask the Experts - proper mining claim procedures • The Hughes Creek Placers, Montana • Benefits of a Detecting Partner • Excavator Testing Wet Placer Ground • Hard Rock Milling: A Matter of Scale • Paperwork Guy—A Cautionary Tale • ICMJ Online Forum Now Available • Detecting For Gold—Are You Up For It? • A Trip Down the Yukon River • Melman on Gold & Silver • Mining Stock Quotes and Mineral & Metal Prices