All Articles
The Boludo Placers, Sonora
November 2004 by Edgar B. Heylmun, PhD
The Boludo placers described here include gravels that have been listed under many different names, including Altar, Golden Triangle, Llanos del Oro, San Francisco, and Trincheras, among others. The placers are on desert flats at the northwest end of Sierra Santa Rosa, about 2,600 feet above sea level. It is in a region of northwest-trending mountain ranges separated by broad desert valleys.Ask the Experts
What to do with black sands
Melman on Gold & Silver
A very famous quote that appears particularly relevant to the past month is one attributed to former British Prime Minister Harold MacMillan. When asked what could most easily derail a government, he replied, “Events, dear boy, events.” We certainly had events in abundance this past month.
Picks & Pans: Koyukuk River Gold—Prospecting Alaska's Brooks Range
The water rose up in a great splash around the front of the pickup. The tires smashed into a couple of large boulders and suddenly the truck nosed down into a deep hole and bounced back out as I stepped on the gas pedal.
Pumping Water With Solar Power
Solar energy can be used for any size placer or hard rock mining operation. It is most practical for small and longer-term operations provided your mine is not located in a dense forest.
Melman on Gold & Silver
Long-term, the outlook remains very favorable—but the obvious and important question is when we might expect a solid bull market revival to take place.
Melman on Gold & Silver
...as a holder of contrarian points of view, I am somewhat delighted to see the recent enormous surge in published negative commentaries regarding gold's future.
Subscription Required:
The Bawl Mill
• Editorial: Montana's Controversial Rock Creek Mine
• First Load of Concentrate Leaves Reopened Ruth Mine
• Uranium Industry Enjoys Rebound as Prices Nearly Triple
• BLM Warning About Purchase of Mining Claims on the Internet
• Determining the Amount of Gold in a Quartz Specimen
• Placer PGMs in Coon Creek, California
• Getting Your Float Circuit Layout Right
• Pick Up Austria's New Coin—If You Can Lift It
• New Prospecting Guides Available Online
• Police Extend Detention of Newmont Executives
• Picks & Pans—Drywashing and Detecting in Southern California
• Over The Divide—Merwin (Merv) H. Hemp
• The Golden Highway—Placer County
• Northwest Miners Rally a Success
• Mine Threat Just a Stunt to Criticize Land Laws
• MINExpo 2004 Convention Report
• Looking Back
• Melman on Gold & Silver
• Mining Stock Quotes and Mineral & Metal Prices
