All Articles
Endangered Species Act is a Mess
June 2004 by Scott Harn
You’ve likely read about some of the problems with the Endangered Species Act (ESA) in the Legislative Update section, and in previous issues of our publication. The problems never seem to end, and it is way past the time for reform. A current story highlights some of these problems.Prospecting With a Magnetometer
Swedes were the first to note variations in the Earth's magnetic field, circa 1640, and they were the first to use the dip needle. They made the first magnetometer in 1870.
A Unique Prospecting Method
In 1948, I lived alone in the Cerrillos Mountains south of Santa Fe, New Mexico, at the Tom Payne Mine. When lead and zinc metal prices suddenly took a nosedive, our ore and concentrate shipments from the Payne to the ASARCO smelter...
PDAC 2009 Convention Highlights
...it was impossible not to notice the absence of many junior mining companies that were present last year. Due to the dual circumstances of the world’s credit problems along with the steep declines in base metals prices, many of them, unfortunately, have simply gone broke and closed their doors. Others are so strapped for cash...
Bucket Line Dredges
For many years, mechanical mining in waterways was seen as an impossibility by miners, especially in the Western US. The few dredges that had been tried at various locations were generally built on designs similar to those that had been used in harbor excavation work, but it was found that they were...
Legislative and Regulatory Update
• Oregon proposed withdrawal
• Vote
Gold Deposits in Skarn
Skarn consists of coarse-grained calcium, magnesium, iron, and aluminum silicates formed by hydrothermal solutions, which replace limestone or dolomite near the contact with an igneous intrusion. The contact metamorphism is usually caused by an intrusion such as quartz monzonite, granodiorite, or similar rock type, which may or may not be mineralized.
The Bawl Mill
• Caught on camera...
• Taxpayers can’t go “cold turkey”
• Hurricane FEMA wipes out 1,800 homes
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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
• Understanding Hard Rock Mining: Terms and Methods—Part I
• Mood at Calgary Conference is Subdued, But Optomistic
• Reinventing the Wheel—The Infinity-Jet
• Company Notes
• 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
