Hardrock in Downieville
November 2000 by Mark MallicoatA recent weekend trip found us leaving the Grass Valley, California area to meet up with some friends in Downieville.
…I was looking down on what was a frightening 500-foot sheer drop-off. We were precariously close to the edge as the shoulder was practically non-existent.
She explained that she didn’t like the numbers that the computer model gave her for this section of river, so she “adjusted the numbers by hand” to more accurately reflect what she thought they should be.
Q: I have tried various leaching techniques from which I cannot get a precipitate.
Oil is a naturally occurring combustible fluid of organic origin that is commonly found in California and in many other parts of the world.
The Reynolds gold mine is located approximately 6 miles northeast of the town of Troy, North Carolina, the county seat of Montgomery County. According to old reports, the mine was discovered around 1800. Production reports from the mine are sketchy, but mention the occurrence of telluride minerals associated with the gold. Early work was apparently confined to a number of quartz veins that traverse the property in a northeasterly direction.
So, how much rain does it take to cause a major movement of gravels in a stream and redistribute the gold? The technical answer is enough water to move the bed load of the river.
The Washington Department of Ecology recently issued a revised environmental study of a proposed Okanogan County gold mine. The study is an amendment to one done in 1997 for the proposed Crown Jewel open pit mine on Buckhorn Mountain near Chesaw.
The Bawl Mill • Our Readers Say • Enrichment of Gold Veins • The Assay of High Iron Gold Ores • The Patch • History of Mining—Bradshaw Mountains, AZ (Part I) • Picks & Pans—The Green Rock, Rattlesnakes, Good Gold and Ruth's Mine • The Oretron • Silver Hill, North Carolina • Residual, Lateritic and Gossan "Soils" as Potential Nuggetshooting Sites • Looking Back • Company Notes • Gold in Northern Baja California • California State Gold Panning Championship Results • Melman on Gold & Silver • V.P. Contender Addresses Mining Show