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Historic Mining at Mount Diablo, CA
September 1999 by Richard H. Peterson, PhD
Located in Contra Costa County in the East Bay region of the San Francisco Bay Area, Mount Diablo was the site of the largest coal mining operation in the state in the last half of the nineteenth century. The northern foothills of the mountain produced nearly four million tons of coal.January Issues Delayed For Weeks As USPS Searches Their Facility
“Neither rain nor sleet nor snow...” How does that saying go?
Ask The Experts - How clean do my gold concentrates need to be to pour a gold button or bar?
Oil Seeps in Arizona
Compared to California, Arizona has virtually no oil seeps. But, the great Permian Basin of West Texas has virtually none either. Arizona has something that neither California nor Texas have, and that is public lands that are open for leasing. The northern half of Arizona has more seeps and is thus of greater interest, but it would be foolish to disregard the southern half because giant oil and natural gas fields could underlie some of the broad desert valleys.
Yukon Placer Miners Fighting Extreme Discharge Limits
Hold up a glass of tap water and take a look at it. It’s about as clear as the new Yukon water regulations require the water returning to rivers to be after being used by placer miners. The new limit of 25 parts per million (ppm) sediment does not leave a lot of maneuvering room in terms of discharge.
Picks & Pans: More Big River Dredging in Northern California
As the mining club in Happy Camp had lowered their initial joining price to something even a dirt-poor, full-time gold dredger like me could afford, I joined—and then impatiently awaited the coming of dredging season.
Relocating A Historic Vein
Opportunities exist in both hardrock and placer. Production costs to operate a small placer mining project are a lot less than for a hardrock mine. Underground placers are a different story, but generally, recovering placer gold takes...
Prospecting in Tennessee
As soon as I learned that there was gold in Tennessee I just had to go find some.
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