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Looking Back
November 1999 by Staff
Excerpts from California Mining Journal, our original title, published 50 years ago this month.An Interview with Minelab Engineer Mark Lawrie
The design of metal detectors well-suited for prospecting is an interesting process and not necessarily an easy one to achieve. It is a combination that blends the desires of what prospectors would like, the requirements of sales people and dealers, with the science and physics of what the electronics can achieve.
Hard Rock and Placer Gold of Manhattan, Nevada
He found 5 to 7 feet of gravel containing half an ounce per yard. This started a rush of placer activity and several other shafts were sunk, with some large multi-ounce nuggets being found.
Detecting For Gold—Are You Up For It?

Ask the Experts
Q: Can a voltmeter be used to determine the type of metal/mineral present in soil?
Legislative and Regulatory Update
• Comments needed
• California tries another route to restrict miners and dredgers
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The Bawl Mill
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• Judge Blocks Road Protest
• Company to Sue Over Stymied Gold Mine
• No Mining / Logging on 40 Million Acres
• Catastrophism vs. Uniformitarianism
• 1st Annual Placer County Open Gold Panning Championships—1999
• Picks & Pans: The Ten-Pennyweight Nugget
• Mining in Sonora, Mexico
• Pullin' the Pin
• Land of Golden Dreams—California in the Gold Rush Decade
• Cerro Colorado Silver, Arizona
• Progressive Privy Program Proved Popular
• Melman on Gold & Silver
• Mining Stock Quotes and Mineral & Metal Prices
• Surging Gold Prices Burn a Few Unlucky Mining Firms