All Articles
Gallium and Germanium in Utah
September 2003 by Edgar B. Heylmun, PhD
The high-tech industries are making use of a number of so-called “minor” metals, many of which are obtained as byproducts of copper, lead, or zinc mining. Some of the minor metals have properties that are ideal for certain applications and, in some cases, advancements in technology are being held back because of a shortage of the metals.San Manuel Mine Officially Closes With a Bang
One of the largest underground copper mines in the world officially closed mid-January, as demolition crews blasted its twin smelter stacks.
Detecting for Possible Mid-Range Eluvial Gold
Actually, this mid-range gold zone can exist in any eluvial placer field with a shallow zone where the ground “tightens up” below the loosely packed surface dirt to harder packed dirt. However, its presence depends upon several factors:
Dredging Safety: Don't Ignore The Warning Signs
At first, I tried to shift things around, but then a hand with a rock would appear, so I would stop trying to adjust my gear and grab the rock to keep things moving.
Oregon Anti-Dredging Bill
SB 765...would tax suction gold dredgers by charging a $50 annual fee for in-state dredgers and a whopping $2,500 fee for out-of-state dredgers for each county where the miner intends to dredge.
River Dredging vs. Creek Dredging—Part II
While river dredging in fast water, don’t be afraid of being swept out of your dredge hole by the current. If this happens—and it most certainly will in fast water—there is no need to panic. Don’t try to swim against the current because you will waste much energy in an effort to conquer the river. Just let it take you downstream.
Conrey Dredge No. 4—Part II
These were the men who periodically picked up the gold amalgam from the tables and sluices in the dredge, processed it, and transported the gold ingots to the railroad express office in Alder. Their trustworthiness must have commanded a prominent wage.
Subscription Required:
The Bawl Mill
• Klondike Gold
• State Rivers Closed to Prospecting in Washington
• A Guide to Overlooked Gold Deposits—Part I
• The Montezuma Quadrangle, Summit County, Colorado
• Looking for Gold in British Columbia
• The Reynolds (Star) Gold Mine
• Picks & Pans: Sniping for Low Stream Gold
• Company Notes
• Why Do We Do The Things We Do?
• Melman on Gold & Silver
• Mining Stock Quotes and Mineral & Metal Prices
