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New Life for the Suction Nozzle

The suction nozzle was one of the first Venturi nozzles to be used in the dredging business. Years later it was replaced with the straight Venturi system, which is sometimes referred to as a “log.” The main benefit of the log is that the operator only needs a suction hose with a short nozzle.

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Resolution Copper Mine, Arizona


The Resolution copper mine is near Superior, Arizona (population 3,500), along the west side of the Pinal Mountains in central Arizona, 64 miles east of downtown Phoenix. The region receives about 16 inches of rain per year, enough to support chaparral vegetation.

Utility Agrees to Remove Four Klamath River Dams


PacificCorp, which owns four hydroelectric dams on the Klamath River, has agreed to terms for their removal, a key milestone in efforts to restore what was once the third biggest salmon run on the West Coast and end decades of battles over scarce water.

125 Years of Mining History in the Panamints


Two years after California's major gold discovery, another find was made in Ballarat, Australia. The news of the discovery went world-wide, and many of the California prospectors had heard plenty about Australian gold—especially the 2,284-ounce nugget found there.

Groups Plan to Sue Over Lynx Protection


Three environmental groups have served formal notice that they intend to sue the U.S. Forest Service for failing to protect the Canada lynx as a threatened species under the Endangered Species Act.

The Bawl Mill


• The "2 Million Dollar Man"
• A record worth breaking
• By the numbers...

Company Notes


• Canyon Resources
• Vista Gold Corp.
• Placer Dome Inc.
• Royal Gold, Inc.

How to Refine Silver—Pt I


Silver refining has been used from ancient times to change the characteristics of the metal. Early metallurgists refined silver by heating it a couple hundred degrees above its melting point and holding the metal at an elevated temperature for a period of time.

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