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The Dahlberg Dry Rocker
I am building some dry rockers for gold. It is manually operated and is a gravity separation device. It is 2 feet in diameter and 11 inches wide. It consists of a grizzly a trough and a nugget trap. It has a 1/4 inch mesh screen. It has a handle and may be operated with one hand. The dry rocker is suspended on two 3/4 inch sealed ball bearings. 4 legs hold it up off the ground. It is easy to use and is easily emptied of concentrate when the operator is ready to check it for gold.
I designed the Dahlberg dry rocker about 8 years ago and have made some improvements on it since making the first model. I used it in Arizona in the Winter and really like to use it because it is quiet and produces less dust than most dry washers. A couple of times I checked the dry rocker just to see if I was losing any gold and I reran some of the material that I had previously ran through the dry rocker and did not find any gold the second time. I also tried running 50 steel shot through the dry rocker and recovered all 50 of them. I felt that that was a good test because gold is much denser than steel shot.
Carl H. Dahlberg
Bonners Ferry, Idaho
chdahlberg@Yahoo.com
What else can I help you with?
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sheet rock and dry wall
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is mud and dry mud
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Is it safe to use dry ice in a beverage?
The beverage'll probrably freeze over. Make sure there's no impurities in the dry ice, and avoid touching the ice at all costs. Whatever you do, DO NOT swallow the ice. -.-Keeping the above in mind, go for it!http://www.hauntyourhome.com/howto/dryicedrinks.htmThis is a useful site on this topic, and there isn't much to read. Check it out if you're using dry ice in drinks at parties.
What is dry tubes?
Dry tubes are Specially formulated tube helps prevent moisture build-up caused by humidity or perspiration
