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Breccia Pipes
December 2001 by Edgar B. Heylmun, PhD
A breccia pipe, or chimney, is an irregular cylindrical mass of breccia that is often silicified and stands out as an iron-stained knob. They can be from a few feet to several hundred feet in diameter, and may or may not be mineralized.
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Mining Ends in Leadville
March 1999
An era ended in Leadville February 4, when the last miners left the Black Cloud mine and hung up their brass tags for the last time.
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Melman on Gold & Silver
November 2008
...we are witnessing the onset of a major transformation of the underlying economic/political structure, perhaps headed toward government controls beyond any previous American experience.
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Dick DeVoto, head of Canyon Resources Corp., said his company's lawsuit against the state of Montana will go after the voter-initiated ban on the use of cyanide for mining. This marks a change in strategy.
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Where To Find Diamonds
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My head nearly scraped the caribou horns that hung above the doorway of the old tarpaper cabin I would call home for a few days. The cabin was originally built in the early 1930s and had been dragged about 200 yards across the valley to...
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The Bawl Mill
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• Copenhagen—Don't ask, don't tell
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Nevada Mining Tax Cap Repeal Clears Committee
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An Assembly panel approved a measure to repeal the constitutional tax cap on net proceeds paid by mining companies in Nevada.
An Assembly panel approved a measure to repeal the constitutional tax cap on net proceeds paid by mining companies in Nevada.
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