All Articles
The Tangential Impulse Water Wheel in California Gold Mining History—Part II
March 2004 by Guest Writer
Even before Pelton relocated in San Francisco in 1888, many other competitive foundries and machine shops chose to enter the water wheel market. These firms were already busy with the mining trade, producing hoists, stamp mills, ore carts, Cornish pumps, crushers, grinders, compressors and drills.Additional articles that might interest you...
Discovery of the Mountain Pass REO Deposit
May 2001
How does one go about discovering a rare earth oxide (REO) deposit when he is not familiar with the rare and unusual rocks and minerals that are found in such deposits? That was the case at Mountain Pass, California, yet the deposit was eventually discovered and mined.
How does one go about discovering a rare earth oxide (REO) deposit when he is not familiar with the rare and unusual rocks and minerals that are found in such deposits? That was the case at Mountain Pass, California, yet the deposit was eventually discovered and mined.
The Smell of Gold -- Part II
July 2015
While mapping, I also found rock chips in the soil that were characteristic of the same wall rock alteration that occurs adjacent to the known lodes in the greenstone belt.
While mapping, I also found rock chips in the soil that were characteristic of the same wall rock alteration that occurs adjacent to the known lodes in the greenstone belt.
The Subsurface Suction Dredge
November 2013
The problems of the submersible dredge tube are addressed by the subsurface dredge, where the enclosed sluice recovery tube is suspended from a flotation assembly...
The problems of the submersible dredge tube are addressed by the subsurface dredge, where the enclosed sluice recovery tube is suspended from a flotation assembly...
Spanish Police Seize Ship in Treasure Fight
August 2007
Spanish Civil Guards heightened a battle over a $500 million treasure of gold and silver coins from a shipwreck when they seized a vessel belonging to a Tampa, Florida company.
Spanish Civil Guards heightened a battle over a $500 million treasure of gold and silver coins from a shipwreck when they seized a vessel belonging to a Tampa, Florida company.
The Bawl Mill
September 2012
• The "2 Million Dollar Man"
• A record worth breaking
• By the numbers...
• The "2 Million Dollar Man"
• A record worth breaking
• By the numbers...
Small-Scale Hard Rock Mining With Water Recycling
March 2015
Once I have established the presence of gold in the sample, I collect five-gallon bucket quantities of the rock material for processing back at my shop.
Once I have established the presence of gold in the sample, I collect five-gallon bucket quantities of the rock material for processing back at my shop.
Piles of Gold
September 2015
These gritty clay lines were only a quarter of an inch up to three inches wide. Once the line had been laid out, they would look at the wall of gritty clay material and seek more indicators.
These gritty clay lines were only a quarter of an inch up to three inches wide. Once the line had been laid out, they would look at the wall of gritty clay material and seek more indicators.
Subscription Required:
The Bawl Mill
• Our Readers Say
• Fair and Balanced? If You Have the Cash
• Pocket Gold in Gneiss
• Australian Prospector Detects 150-Ounce Nugget
• Picks & Pans: Dredging After The Flood
• Mining Industry Enthusiastic About Prospects
• Looking For Gold in All The Right Places
• Fraser Institute Ranks Best Regions for Mining Investment
• Ask the Experts: Recommended Reading—Part II
• Red Lake, Ontario
• Company Notes
• Melman on Gold & Silver
• Mining Stock Quotes and Mineral & Metal Prices
