Small Mine Selective Blasting
January 2000 by Dr. Ralph E. PrayDrill holes in a mineralized vein often penetrate hidden layers of poor ore which, after blasting, end up diluting the production quality. Disseminated gold ores carrying two ounces per ton may be identical in appearance to adjacent vein material...
The Forest Service supervisor in charge of national forests in Nevada abruptly announced her resignation November 8, citing an atmosphere of "hostility and distrust" toward federal employees in the state.
The Livengood (pronounced with a long “i” as in alive) gold stampede was the last of the great Alaska Gold Rush. The string of gold rushes began in 1886 with the Fortymile gold strike, and ten years later with the large Yukon Klondike goldfields discovery.
...this time, instead of swarming over streams and gravel beds teasing out flakes of the precious metal, miners may have found the fabled and elusive mother lode.
Smaller exploration and development companies, many of which were international, were driven out of the US during the Clinton era and are now looking for signs that it’s safe to come back. Policy changes, rising metal prices, a weakened dollar and a more positive hiring forecast may be the most attractive set of signs the industry has seen in years.
A very good baseball hitter might get a hit roughly one time out of every three at-bats, but for prospectors often the results are much sparser and it may take many trips before the prospector hits a home run.
The favorable geology of the northeastern and central parts of the Seven Troughs Range are the parts most interesting to prospectors. They are underlain by a thick sequence of Tertiary volcanic rocks, mostly rhyolites and andesites.
"Grouping zinc with arsenic, mercury, cyanide and dioxins is not supported by science, logic or common sense." said George Vary, Executive Directors of the American Zinc Association (AZA).
The Bawl Mill • Over the Divide • Our Readers Say • Letter from the Editor to our Readers and Advertisers • Administration Considers Bypassing Congress • First Woman to Draw Mining Pension • Mohave Mountain Placers, Arizona • High Court to Reconsider Wilderness Water Rights • Sixteen to One Takes on MSHA • Picks & Pans: Gold Mining on Joie Osgood Ranch • Gold • Company Notes • Millie's Tailings • Placer PGMs in Alaska • Mogollon—New Mexico's Remote Gold Camp • ICMJ 9th Annual Photo Contest Results • The Other Minerals of Mt. Diablo • Melman on Gold & Silver • Mining Stock Quotes and Mineral & Metal Prices • Looking Back