February 2007 by StaffExcerpts from California Mining Journal, our original title, published 50 years ago this month.
Q: I would like to know how to use a classifier when I dump my gravel into my sluice box. I would also like to know what sizes classifiers come in. I know that they are in sizes like -3/4. What does the “minus” in the size mean? Thanks for any help you can give me.
Drill 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...
Dale's research of known gold producing districts in southern California and his knowledge of metal detecting produced these large gold-quartz specimens. This certainly would make any trip a very good one, but it turned out to be just the...
...we will visit three dormant mining districts that lie in the Oquirrh Range in Utah. Some major activity that transformed the lives of thousands of people occurred here from the mid 1860s to the late 1990s.
One of the largest underground copper mines in the world officially closed mid-January, as demolition crews blasted its twin smelter stacks.
I picked up a noticeably heavy, fist-sized chunk of what I thought was a heavy piece of iron. After wiping some of the dirt and clay off, I still didn't know what on earth this object was.
The Bawl Mill • Prospectors Beat Mining Claim Tax • In Pursuit of Gold and Silver in the Sierra Madres—Establishing a Mining Company in Mexico • Update On “Special Rock” Kicking • Michigan DEQ Gives Tentative OK to Nickel, Copper Mine • Saved Before the Tax Bell Tolled • The Petersville—Yentna Goldfields • Demand for Copper Boosts Zambian Mining • Doc Livingston • Bum Luck • San Manuel Mine Officially Closes With a Bang • Environmentalists Target Pebble Mine • Detecting in Australia's Pilbara Region • Melman on Gold & Silver • Mining Stock Quotes and Mineral & Metal Prices