All Articles
Alluvial Fans
April 2002 by Edgar B. Heylmun, PhD
Alluvial fans are essentially dry land “deltas” which can be found in all climates. However, they are best developed in arid and semi-arid regions, where they may be many square miles in area. They are built up by outpourings of silt, sand, and gravel caused by seasonal run-off, as well as by boulders and cobbles carried by flash floods.Additional articles that might interest you...
Hidden Features in Venezuela
October 2003
Venezuela is considerably larger than the state of Texas and is located on the north coast of South America. The capital city of Caracas (pop. 4 million) is some 2,135 miles south of New York City. Most of the population is in the northern half of the nation, with paved highways connecting the principal cities and towns. The Orinoco River flows through the southern and central parts of the country, and much of the travel into the interior is along that river and its tributaries.
Venezuela is considerably larger than the state of Texas and is located on the north coast of South America. The capital city of Caracas (pop. 4 million) is some 2,135 miles south of New York City. Most of the population is in the northern half of the nation, with paved highways connecting the principal cities and towns. The Orinoco River flows through the southern and central parts of the country, and much of the travel into the interior is along that river and its tributaries.
Just Another Ordinary Weekend
March 2015
There was no evidence that anyone else had ever worked this gully with the exception of some old sample piles near the foot of the ravine.
There was no evidence that anyone else had ever worked this gully with the exception of some old sample piles near the foot of the ravine.Cold Water Gold
December 2011
It was June 2011, and my wife Fran and I with Grandson Lucas and good friend Ernie Cruz were attempting to get to our gold mining claim on the Middle Fork of the Feather River about ten miles from Quincy, California. Rain had poured down in the previous few days and the road in a large number of low places was under water. Following two hours of slugging through the mud...
It was June 2011, and my wife Fran and I with Grandson Lucas and good friend Ernie Cruz were attempting to get to our gold mining claim on the Middle Fork of the Feather River about ten miles from Quincy, California. Rain had poured down in the previous few days and the road in a large number of low places was under water. Following two hours of slugging through the mud...
The Essentials of Dry Washing
August 2013
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.
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.
Beryllium in Utah
June 2002
Much of the world’s supply of beryllium is mined by Brush-Wellman, Inc., at Spor Mountain, Utah. The district is in a harsh desert environment which receives only 6 inches of precipitation a year, barely enough to support scrubby desert growth.
Much of the world’s supply of beryllium is mined by Brush-Wellman, Inc., at Spor Mountain, Utah. The district is in a harsh desert environment which receives only 6 inches of precipitation a year, barely enough to support scrubby desert growth.
New Technology for Extracting Lithium To Be Tested in Nevada
December 2017
Production of the Lithium will be completed in a 48-hour process with much less waste and a substantial increase of recovery rates from around 40% with conventional evaporation to near 90%.
Melman on Gold & Silver
November 2009
There are many factors that affect the price of gold. It appears to us that the majority of them are now pointing to higher prices, not lower.
There are many factors that affect the price of gold. It appears to us that the majority of them are now pointing to higher prices, not lower.
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