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• Determining the amount of gold in a specimen

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Crumb Hunting With A VLF Detector


Chris got a nice target signal on the edge of rising bedrock, but still in a low, but washed area. After breaking up the bedrock, he recovered several pieces of gold amounting to almost three pennyweight.

Sampling for Success—Part II


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.

Ask the Experts


• How do I get mining claims appraised?

How to Evaluate Mineral Claims—What to Know Before You Buy


Even though they have put down thousands of dollars, the buyers often stop paying on their claims part way through the process after they realize they’ve been duped, but the company just sells it again to another buyer.

Hard Rock Milling: A Matter of Scale


Most prospectors understand placer mining a lot better than hard rock mining and don’t realize the amount of work that goes into processing different types of hard rock ore.

What To Do When Gold Recovery and Assay Values Differ


Before going into an analysis of the ore composition, two other major factors will affect the result. These are the accuracy of the assay and the effectiveness of the mill for the gold recovery.

Resurrecting An Old Hard Rock Mine--The Saga Continues


Another little gem of equipment he built was a nifty sample splitter. In order to get accurate assays, you need to have really good, representative samples for the assayer to process.

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