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PLP and MMAC Update

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Uphill Battle Continues for California Dredgers


There are currently three controlling agencies or entities over suction dredging in California—and you can make that four if the state legislature decides to further muddy the waters with additional legislation to block suction gold dredging in the state.

Small-Scale Concentrating and Recovery Methods


The first step in my recovery process after milling the ore to the desired size is to table it. On this particular ore, I get good results milling it to minus 100 mesh.

Principles of Designing Your Mill Production System, Part II: Mill Design


Starting small with quick profitability gives you a lot of financial elbow room plus real-world experience that can be used for final mill design.

Fire Assay Finish by Silver Nitrate Fusion for PGMs


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

Addressing EPA Overreach: What Dredgers Need to Know


The Environmental Protection Agency (EPA) has been attempting to extend their authority and intimidate miners and other public land users for decades. Suction gold dredgers are no exception, and we want to highlight a recent example of how to deal with this federal overreach.

Using Countercurrent Material Flow to Improve Gold Recovery Efficiency


There is a material processing principle widely used in large milling operations to improve recovery that is poorly understood by most of the micro-mining and prospecting community...

Papa's Got A Brand New Dredge!


It was time to prime the pump and start the engine! Dan’s priming method is to use a small, submersible, 12-volt pump. My priming method is to use a hand-operated diaphragm pump.

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