Wyoming's Billion Dollar Nugget—The Trilogy Ends
August 2011 by David C. FreitagOur testing over the past 15 years was to confirm or deny the USGS report completed in 1978. Besides the half acre test dig, we completed many additional test digs by hand and with the backhoe.
I saw gold this summer. The kind of gold that I haven’t seen since ‘81. The kind of gold that rattles in the pan. The kind of gold that would start a stampede—even in 1898.
After he excavates the ore down to bedrock, he goes over the bedrock with a metal detector to ensure he didn't leave any gold behind before he backfills the area.
The first and most important thing of the sampling process is to try to be as unbiased as possible. There is a natural tendency to select rock that looks the best—even unconsciously.
Before I tell you what dredging backwards is, I’ll tell you why my team and I decided to give this very unconventional dredging method a try.
Some ores—mostly those with a high free gold content—are very amenable to gravity concentration. Well oxidized ores containing coarse gold are usually best for non-cyanide processes. Ores with significant sulfide content may require the...
Most placer equipment is really made with gold in the 30 and larger mesh sizes in mind, though if carefully used can often get reasonable recovery down to the 50 mesh size.
- NEPA comments due
- Update on latest US Supreme Court suction gold dredging appeal
- Washington State tries to restrict suction gold dredging
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