Fire Assay Finish by Silver Nitrate Fusion for PGMs

July 2021 by Mike Robinson

…my intent is to distribute this information in layman’s language so that even the “backyard/shade tree/mom & pop” fire assayers can benefit.

Hard Rock 101: Breaking Rock—Part I

May 2020

What do you do when you’ve located a promising deposit of gold or gemstones, but it’s trapped in solid rock?

Prospecting Hard Rock

March 2014
We panned out maybe three gold pans of the material and we were shocked at the gold that was there. This rock appeared to be rich.

Long-Term Camping Plan at Fortymile Proposed by BLM

August 1999
A draft environmental assessment of a proposal to allow long-term camping by gold miners along 21 miles of the North Fork of the Fortymile Wild and Scenic River is available from the Bureau of Land Management.

Care and Lubrication of a Model 13 Laboratory Wilfley Table

June 2016
A Wilfley table works best when all of the mineral being run across it (the pulp) is about the same size.  For this reason, I took a good look at each of the samples.

Designing and Evaluating Placer Gold Recovery Plants

September 2014
For this article, I am focusing on industrial production plants that can handle 10 cubic yards per hour or more and would be fed by a loader or other heavy equipment...

Resurrecting An Old Hard Rock Mine

December 2018

There were nice sections of vein material at the end of several drifts, like they just stopped work one day and walked away.

Ask The Experts

June 2016
Q: How do I improve my small-scale mining operation’s gold production?

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