How To
Ask the Experts
January 2015 by Chris Ralph
• How do I clean up gold encrusted with iron-sulfides?Mining Claims—What to Know Before You File
During the initial assessment year (the year of location), the claim maintenance fee must be paid at the time the notice of location is filed with the Bureau of Land Management. Failure to pay the claim maintenance fee will void the claim.
Underground Mining: Getting the Ore Out
![](http://www.icmj.com/userfiles/images/201702/38-toc-underground-mining.jpg)
Moving The Big Rocks
![](http://www.icmj.com/userfiles/images/201610/toc-41-moving-big-rocks.jpg)
A Data Miner Builds A Power Sluice
Data mining involves processing huge amounts of digital information to find hidden patterns and financial relationships. To executives, the findings are like gold, but on the weekends, I prefer seeing the real thing in the bottom of my pan.
Tips and Tricks
I cleared the connector by poking a small Phillips screwdriver through it. To ensure the bore was clean, I dunked the connector into some water and then blew it clean with my shop air compressor.
How to Interpret Assay Values
This assay system of ounces per ton sounds simple enough, but the use of the metric system and the additional measuring terms of “grams per ton” and “parts per million” (ppm) has created some misunderstanding of ore value.
Hunches, Choices and Guesses
![](http://www.icmj.com/userfiles/images/201309/TOC-hunches.jpg)
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• Return to Chicken, Alaska
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• Melman on Gold & Silver
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• How to Field Evaluate A Placer Property