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Placer Gold in Washington
February 2001 by Edgar B. Heylmun, PhD
The state of Washington is not especially known for placer gold, yet significant amounts have been recovered in a few districts. These deposits are usually downstream from lode mining areas, some of which are in British Columbia.
Gold Rush Continues in Africa
…some miners are doing exceptionally well… with a few obtaining amounts estimated in the millions of dollars.
Executive Defends Special Mill Site Exemption
Hardrock mining never would have happened in the United States if a recent interpretation of the nation's mining law had been in effect in the 1890s, a mining executive says.
Understanding Geologic Deposit Models
Geologists have long noted the similarities of certain types of mineral deposits all across the globe. Similar minerals, similar country rocks, and similar grades of mineralization may occur in several different parts of the world.
Finding Gold in Mokelumne River Canyon
The Mokelumne River was first worked by the ‘49ers, and foundations of Spanish missions and old miner’s cabins are still present. Elton’s first experience with Roaring Camp came in 1947, when he took a job packing in supplies...
Hardrock Detecting
A local mining company had been mining in the Circle mining district area creeks in interior Alaska for sixteen years. Using bulldozers, drag-lines, water pumps, and large sluicing plants, the owner-operator was very familiar with the geology...
Lamproites and Diamonds
Most prospectors are aware that diamonds are sometimes found in kimberlite, but few are aware that diamonds are also found in another rock type known as lamproite. Lamproite is a very rare volcanic rock that often...
Small-Scale Prospecting & Mining (A Little History)
During the 49’er gold rush, because of harsh winters and adverse river conditions, the working season could be restricted for a week or more at a time. Moreover, many of the “argonauts” (a term dating back to the adventures of the early Greek gold seekers in seeking the Golden Fleece), were unprepared both mentally and physically to meet the harsh conditions.
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