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Small Mine Selective Blasting
January 2000 by Dr. Ralph E. Pray
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...
Our Nugget Shooting Adventure
Gold—a very elusive, heavy, yellow, metallic element—is coveted by man and not easily given up by Mother Nature. This is a story of a group of friends—old, new, and some I hadn’t met before this trip. We embarked on a journey in search of that yellow metal.
The Birthday Nugget Patch
Down around 10 or 12 inches I hit a large cobble that appeared to be one type of hot rock for this area. I thought bad things about the new technology until I checked the rock.
The Bawl Mill
• Too early to build the crusher?
• Time for small mine exemptions
• Should I be checking the culverts for gold?
Company Notes
• CoreMarkets.com
• Canyon Resources Corp.
• X-Cal Resources
• Homestake Mining Company
• Pan American Silver Corp.
American Manganese
Exploration geologists looking for strategic metals projects may find open ground in some of the old historic manganese mine areas as manganese has been largely overlooked as an exploration target for many decades.
Ask The Experts - Is this prospect worth sampling?
Visionaries, Scoundrels, and Gamblers
Ask leading historians to name Colorado's top 10 builders and the list quickly grows to 50 people. The list includes visionaries, scoundrels and gamblers.
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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
