Larger operations
The Basics of Froth Flotation
June 2015
I thought it might be worthwhile to take a look at the basics of this important mineral separation technique and how a miner can use it to recover the values out of an ore.
I thought it might be worthwhile to take a look at the basics of this important mineral separation technique and how a miner can use it to recover the values out of an ore.
The Montanore Copper and Silver Project
June 2015
This adit will be nearly 3.5 miles long when it reaches the ore zone.
This adit will be nearly 3.5 miles long when it reaches the ore zone.
The Gold, Silver and Base Metal Mines of Eureka, Nevada
April 2015
...the area around Eureka, Nevada is well mineralized and seems to have a bright potential for future production of all sorts of metals.
...the area around Eureka, Nevada is well mineralized and seems to have a bright potential for future production of all sorts of metals.
The Ely Copper-Gold District of Nevada
January 2015
The main ore deposits of the Ely district are associated with an east-west belt of altered and mineralized rocks measuring about one mile wide that extends 8 miles westward from Ely.
The main ore deposits of the Ely district are associated with an east-west belt of altered and mineralized rocks measuring about one mile wide that extends 8 miles westward from Ely.
Designing and Evaluating Placer Gold Recovery Plants
September 2014
For this article, I am focusing on industrial production plants that can handle 10 cubic yards per hour or more and would be fed by a loader or other heavy equipment...
For this article, I am focusing on industrial production plants that can handle 10 cubic yards per hour or more and would be fed by a loader or other heavy equipment...
Appeals Court OKs Permits for Upper Peninsula Mine
September 2014
The $800 million project will provide 300 jobs during production. It will be the only US mine where nickel is the primary targeted mineral, with about 360 million pounds to be extracted.
The $800 million project will provide 300 jobs during production. It will be the only US mine where nickel is the primary targeted mineral, with about 360 million pounds to be extracted.
Claim Staking Rush Northern Quebec, Canada
March 1999
...at least 10 junior mining companies have been busy pounding stakes in the ground of northern Quebec in hopes of claiming rich nickel deposits.
...at least 10 junior mining companies have been busy pounding stakes in the ground of northern Quebec in hopes of claiming rich nickel deposits.
Conductive Minerals and Your Metal Detector
August 2014
...most prospectors don't even think about the conductivity of minerals, but there are some that do conduct electricity to a certain degree, so metal detectors will respond to them.
...most prospectors don't even think about the conductivity of minerals, but there are some that do conduct electricity to a certain degree, so metal detectors will respond to them.
Drilling for Ore
August 2014
In the simplest sense, drills can be divided by their mode of action—percussion, rotary or a mixture of the two.
In the simplest sense, drills can be divided by their mode of action—percussion, rotary or a mixture of the two.
Gold Ores of the Delamar District, Nevada
August 2014
Even as late as 1906, Delamar was second only to Tonopah and Goldfield in production outshining many better known areas. Since the first discoveries, more than 700,000 ounces of gold have been produced from the mines here.
Even as late as 1906, Delamar was second only to Tonopah and Goldfield in production outshining many better known areas. Since the first discoveries, more than 700,000 ounces of gold have been produced from the mines here.
The Giant King Mine
July 2014
Most gold-bearing veins in this region are controlled by fractures associated with the Melones Fault, a late Cretaceous structure that is 108 to 127 million years old.
Most gold-bearing veins in this region are controlled by fractures associated with the Melones Fault, a late Cretaceous structure that is 108 to 127 million years old.
Mining on the Comstock Lode
July 2014
Even with the decades of mining and exploration, much of the Comstock is still underdeveloped and its potential not fully tapped.
Even with the decades of mining and exploration, much of the Comstock is still underdeveloped and its potential not fully tapped.
Gold and Silver Deposit May Be World's Largest
June 1999
A crater in an undersea volcano off Japan may contain the world's largest gold nugget ever found...
A crater in an undersea volcano off Japan may contain the world's largest gold nugget ever found...
New Oregon Mining Legislation Friendly to Small Miner
August 1999
Oregon Independent Miners president, John Holleman, has advised ICMJ that legislation important to the Oregon small miner, sponsored by his organization, has been signed into law.
Oregon Independent Miners president, John Holleman, has advised ICMJ that legislation important to the Oregon small miner, sponsored by his organization, has been signed into law.
Critical Metals: Zinc
May 2014
In this article, part of an ongoing series taking a look at critical metals in our economy, we will examine the mining and use of the metal zinc.
In this article, part of an ongoing series taking a look at critical metals in our economy, we will examine the mining and use of the metal zinc.
Round Mountain, Nevada
May 2014
There are a number of veins in the disseminated mineralization, but the principle ones on Round Mountain are known as the Los Gazabo and the Keane.
There are a number of veins in the disseminated mineralization, but the principle ones on Round Mountain are known as the Los Gazabo and the Keane.
Using Structural Clues to Locate Buried Placer Channels
April 2014
They must have assumed the paystreak was spotty and had been mined out, so they never mined as close to the side of the valley as they should have.
They must have assumed the paystreak was spotty and had been mined out, so they never mined as close to the side of the valley as they should have.
Gold Deposits of the Ivory Coast
April 2014
Ivory Coast has considerable gold reserves, and this nation has the largest area of greenstone belts prospective for gold in the continent.
Ivory Coast has considerable gold reserves, and this nation has the largest area of greenstone belts prospective for gold in the continent.
Alaska: Large-Scale Mining Can Be Done Right
March 2014
"As elected leaders of the State of Alaska, we want you to know that Alaska is open to investment from those who seek to develop our state's natural resources safely and responsibly..."
"As elected leaders of the State of Alaska, we want you to know that Alaska is open to investment from those who seek to develop our state's natural resources safely and responsibly..."
Comstock Mining Gets Approval
February 2014
The approval, which affects 87 acres on the south end of Silver City, allows the company to move forward with exploration to determine the area's mining potential.
The approval, which affects 87 acres on the south end of Silver City, allows the company to move forward with exploration to determine the area's mining potential.
