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The Bawl Mill

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Gold From Cemented Gravels


The truth is that cemented gravels are really not all that complex. There is no mystery of how gold grew there or somehow wormed its way into these solid gravels.

Copper Deposits of Alaska


Only the famous Kennecott copper mine was able to continue operating through the Depression owing to the exceptional richness of its ore.

Ask The Experts


Q: Is this gold or some other metal?

Gold Depositiion and Gradients of Placer Streams—Part II


The steeper the gradient is, the more potential erosive power to move gold and other bedload sediments, and the more power to remove obstacles to flow.

How Rich Must My Ore Be?


How rich does a hard rock ore have to be for it to be worthwhile to process and extract the gold?

Gold Geochemistry: Where Does Gold Come From?


Prospectors often wonder why gold deposits in veins like it does. Why is one vein rich while another is barren, even though they are only a few hundred feet apart?

Gold and Rare Earth Elements in New Mexico


We import nearly all of our REEs from China, so it’s critical that we find and continue to develop domestic resources of these elements.

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