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Detecting Invisible Gold
April 2009 by Chris Ralph
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The technology certainly has improved quite a bit over the years, so when these owners are testing various types of gold on their machines and they find that some gold responds poorly or not at all...
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Principles of Designing Your Mill Production System, Part II: Mill Design
February 2021
Starting small with quick profitability gives you a lot of financial elbow room plus real-world experience that can be used for final mill design.
A Few Methods for Sampling Hardrock Deposits
June 2014
With a little homework and a methodical approach to sampling, a prospector can determine if a deposit is worthy of more of an investment...
With a little homework and a methodical approach to sampling, a prospector can determine if a deposit is worthy of more of an investment...
Picks & Pans: Koyukuk River Gold—Prospecting Alaska's Brooks Range
June 1999
The water rose up in a great splash around the front of the pickup. The tires smashed into a couple of large boulders and suddenly the truck nosed down into a deep hole and bounced back out as I stepped on the gas pedal.
The water rose up in a great splash around the front of the pickup. The tires smashed into a couple of large boulders and suddenly the truck nosed down into a deep hole and bounced back out as I stepped on the gas pedal.
North Korea Seeks Outside Help to Modernize Mining
March 2002
Eager to earn hard currency, isolated North Korea is trying to modernize its decrepit mining industry with foreign help.
Eager to earn hard currency, isolated North Korea is trying to modernize its decrepit mining industry with foreign help.
San Manuel Mine Officially Closes With a Bang
February 2007
One of the largest underground copper mines in the world officially closed mid-January, as demolition crews blasted its twin smelter stacks.
One of the largest underground copper mines in the world officially closed mid-January, as demolition crews blasted its twin smelter stacks.
The Bawl Mill
May 2006
• A breath of fresh air?
• Ay Carumba!
• Principal pours it on a little too thick...
• A breath of fresh air?
• Ay Carumba!
• Principal pours it on a little too thick...
Mining Companies Use Conservative Valuations
January 2005
Gold mining companies are being conservative in asset valuations despite recent spikes in gold prices in terms of US dollars, according to a survey by PricewaterhouseCoopers.
Gold mining companies are being conservative in asset valuations despite recent spikes in gold prices in terms of US dollars, according to a survey by PricewaterhouseCoopers.
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