New Life for the Suction Nozzle
December 2003 by Reggie GouldThe 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.
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.
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.
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.
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.
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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.
The Bawl Mill • Searching for Placer Diamonds • Lawsuit on Alleged Market Manipulation Continues • Texas "Hill Country" Gold • A Guide to Overlooked Gold Deposits—Part IV • Picks & Pans: Detecting in Northern Nevada • Miners Welcome Comments by Alaska Official • Company Notes • Spectacular Specimens Found in Northern Nevada • Oil Seeps in Arizona • Looking Back • Melman on Gold & Silver • Mining Stock Quotes and Mineral & Metal Prices