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Huge Opal Sells for Nearly $144k at Alaska Auction

The opal is larger than a brick and is broken into two pieces, which von Brandt said was a practice used decades ago to prove gem quality.

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The Essentials of Dry Washing


Most dry washers have a feed rate adjustment. It needs to be set so that the material flows evenly over the riffles and does not bury them.

Legislative and Regulatory Update


• ESA changes for the better

Legislative and Regulatory Update


• California dredging update
• Study: Sage grouse does not need protection
• Tennessee enacts harsh new gold prospecting regulations

Judge Rules Against Dredger in Idaho Civil Case


The path to winning this case should have been to make the plaintiffs prove that a foreign substance was introduced and then discharged, which is the “trigger” for regulations under the Clean Water Act.

The Jenkins Mine Project Pt II: Terrain and Map Study


I studied prominent terrain features and debris fields, located and followed high water lines and marked the newest flood lines left behind by the intense April storms.

California State Gold Panning Championships


The California State Gold Panning Championships are part of the Foresthill Heritage Celebration, which has increased in stature a lot this year. The addition and growth of the annual California State Lumberjack Championships to...

Small-Scale Processing of Hard Rock Ores


Depending on the ore and if significant sulfides are present, a hard rock miner may be able to get away with simply using a flux to digest the other minerals that may be present.

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