History & Geology
The Pedro Gold Dredge
October 2014 by Steve Herschbach
The decision was made to move the dredge intact, a massive undertaking indeed. The goal was to move it only one mile to the Busby’s Chicken Gold Camp, but what a mile that was to be.
Las Médulas—The Gem of the Roman Gold Mines
This mine was a real wonder of engineering, and the water supply and drifts had to be carefully managed to keep it in operation. In fact, it didn’t close due to lack of gold, but instead closed with the fall of the Roman Empire.
The Heavy Minerals in Your Concentrates
The fact that mineral deposits can contribute specific types of heavy minerals is why the analysis of the heavy mineral concentrates in the streams of an area can be an important prospecting technique for finding undiscovered mineral deposits.
The Birimian Greenstone Belts of West Africa
The country we were to visit was Burkina Faso, a small country about the same size of my home state of Nevada with about 10 times more people. The second day I was in Africa, we went out to the goldfields for the first time.
Critical Minerals: Gold
A few quick calculations show that approximately 11 tons of gold are lost each year just in the manufacture of new cell phones.
Nevada's Silver City Gold District -- Part II
May 2016...this district has had a continuous life of gold mining and milling that spans 150 plus years, and it appears that it will keep pressing on for many more years of production.
Strategic Metals—Part I
A bill was introduced and passed by the House of Representatives earlier this year that should make the exploration and opening of a mining operation faster and easier.
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.
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The Bawl Mill
• Ask the Experts
• Ask the Experts
• Ask the Experts
• Ganes Creek After The Flood
• Operation And Application Of Magnetometers
• A Trip to Morgan-Monroe State Forest of Indiana
• Detecting Alone -- What to Look For
• Over the Divide: John A. Miscovich
• What Equipment Do I Need?
• Why Did This Silver Mine Close?
• Melman on Gold & Silver
• Mining Stock Quotes and Mineral & Metal Prices
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Legislative and Regulatory Update
• Wake Up Voters! Oregon SB 838 Study Group Update
