The Small Hardrock Mill—Part II
August 2006 by Del Thomas, MEWelcome back to our mining claim. In part one we located our claim, sunk our shaft, and stored some ore in the ore bin. Now we must decide how we are going to extract the gold. We briefly discussed setting up a lab in a 40-foot semi-trailer at the mine site, so let’s decide what we are going to need in the lab.
Not much has changed along the original stage road that runs easterly from an old schoolhouse northeast of Nogales into the Patagonia Mountains of southern Arizona. Marked on the maps as Duquesne Road, the route has been in use for over 130 years, climbing from the hot desert floor to an almost 6,000-foot elevation pass before dropping back down the eastern slope of the mountains to reach the old mining camps of Washington, Duquesne, and Lochiel.
Well, as they say, "there's a time for everything and everything has it's time"—or something like that!
The signs of copper, which the prospector most commonly sees in the field in outcrops and on the surface, are secondary minerals caused by the action of air and water on the original copper-bearing sulfides that were deposited deep...
Utah is not known for gold, but a significant amount has been produced. Over 12 million ounces of lode and placer gold have been produced from Bingham Canyon alone. However, placer production, per se, has been miniscule compared to other western states, although a lot of dry placers may remain undiscovered.
That is one of the problems with much of the so-called objective information we regularly receive—it is so tinged with partisanship that much of it can barely be believed...
The 250 mile long Colorado Mineral Belt cuts diagonally across central and southwestern Colorado, in the heart of the Rocky Mountains...
The Bawl Mill • Microbes Play Role in Gold Creation • Osisko Exploration: Redeveloping the Historic Malartic Mining Camp • Prospecting at Moore Creek • The Treasure Detective—Part II • 2006 National Mining Hall of Fame Inductees • The Fairbanks Goldfields • Elections May Bring Rush to Republic of Congo • Melman on Gold & Silver