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Tantalum
July 1999 by Edgar B. Heylmun, PhD
Tantalum is a refractory metal which is non-toxic, ductile; easily fabricated, has a high melting point, is highly resistant to corrosion and is a good conductor of heat and electricity. It has the unique ability to transmit an alternating current in only one direction.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.
The Silver, Gold and Gemstones of Candelaria, Nevada
The Candelaria area is of interest to prospectors not just for silver, gold and other metals, but also for the beautiful gemstones found there.
Beach Mining for Placer Gold
What I saw was a beach area that was just completely covered in black sand. Rubbing my hands close together like a kid in a candy store, I could not wait to get set up.
Maitland Bar Nugget to Go On Display
The box sat in a hallway and employees began using it for impromptu cricket games, no knowing what it contained.
Nome Offshore Dredging Creates Challenges
The Alaska state government has been trying to keep up with and maybe even stay on top of the situation by studying the problems associated with rapid growth and how to solve them.
Ask The Experts: Sulfides and fluxes
The concentrate is just the heaviest of the heavy minerals but some sulfides are sneaking in there also with the gold...
Gold Prospecting & Mining Summit Exceeds Expectations
Brian...had cleared off some virgin, gold-bearing bedrock areas prior to our arrival, so everyone had ample opportunity to find and take home some gold.
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