All Articles
Understanding Hard Rock Mining: Terms and Methods—Part I
June 2004 by Chris Ralph
While most small-scale prospectors and miners focus their energies on placer deposits, most large mining companies put their efforts primarily into hard rock mining. Although many miners may see these as two separate worlds that can never meet, a better understanding of hard rock mining for small operators can be very helpful in many ways.Legislative and Regulatory Update
• NEPA improvements coming?
• Speaking of the Forest Service...
• Murkowski proposes tax increase on miners
• Kensington impact statement affirmed
• Rock Creek on hold, for now
• ESA reform update
• Desert Mineral Mining; one down, two to go for permits
• Montana smells a RAT
Mining Sisters Make History
Judy Etherton wasn’t out to make headlines or break any barriers when she entered the mining industry more than 30 years ago.
PLP Update
It is in all of our best interests to have our voices heard. According to the current documents, two local areas that we use frequently… are being considered as being listed as ACEC’s (Areas of Critical Environmental Concern).
Enrichment of Mineral Deposits by Weathering—Part I
The exact minerals formed in the concentrated supergene deposits depends much on the type of country rock around the deposit and the chemistry of the deposit itself, but if conditions are right, this process will form some rich patches of bonanza ore, in some places valued at thousands of dollars to the ton.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.
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The Bawl Mill
• Higher Copper Price Brings Hope, Jobs
• Zeballos Gold Camp, British Columbia
• Agreement Allows Pogo Mine to Resume Construction
• Treasure Hawk Mine Back in Action
• Oregon Dredgers Receive Threats From Environmentalists
• Mood at Calgary Conference is Subdued, But Optomistic
• Reinventing the Wheel—The Infinity-Jet
• Company Notes
• Endangered Species Act is a Mess
• Placer Platinum
• Here Come the MineBots
• Agency Gives Initial Backing to Kensington Mine
• Mining Stock Quotes and Mineral & Metal Prices
• Looking Back
• Melman on Gold & Silver
• Brits Thwart Robbery of Gold and Cash
