Over the Divide

December 1999 by Staff

Detectors: Past, Present and Future

June 2016
Detectors were invented long before I was born, but it was in the 1960s when they started to become an item popular enough to power a fledgling industry. The key development was miniature transistor technology replacing the old fashioned tube technology of the 1950s, making lightweight, affordable detectors possible.

PLP Update

April 2019

The changes we are seeking will most definitely help prospectors, small operations and dredgers. If you haven’t yet read our proposals, you’ll find a link to it at the end of the online version of this article.

The Art of Finding Coarse Gold Part I—The Geology of Coarse Gold Formation

December 2004
Recovering large, coarse gold nuggets is a very exciting experience, and the quest for large gold is often the “holy grail” of the independent prospector, no matter which type of equipment is used. Hefty, good-sized gold nuggets are...

Melman on Gold & Silver

October 1999
By the time you read this, the onrushing, unavoidable object which was once a little speck on the distant horizon will have grown into a modest-size attention-getter.

Tantalum

July 1999
Tantalum is a refractory metal which is non-toxic, ductile; easily fabricated, has a high melting point, is highly resistant to corrosion and is a good conductor of heat and electricity. It has the unique ability to transmit an alternating current in only one direction.

Melman on Gold & Silver

May 2012
Just as we were sitting down to write this column, a political bombshell was released when Rick Santorum announced he was terminating his efforts to win the Republican Presidential nomination, virtually assuring the nomination will be to Mitt Romney. The remaining candidates, Ron Paul and Newt Gingrich appear to have no realistic chances.

The Basics of Crushing and Milling Operations

February 2011
In processing gold, silver and other valuable ores, the minerals containing the values, such as metallic gold, silver-bearing sulfides or other minerals, must be freed from the surrounding host rock before those valuable minerals can be captured.

Subscription Required:
The Bawl Mill   • Our Readers Say   • Desert Phone Trashed   • ICMJ Elected Prospecting Magazine of 1999   • Advertising Manager Leaving ICMJ   • Guest Editorial—California "Special" Dredge Permits in Jeopardy   • The Search Continues   • Guest Editorial: U.S. Government—Like Nobody's Business   • Circulation and Collections Manager Leaving ICMJ   • Company Notes   • House Chair Requests Records on Forest Decision   • BLM Wants to Withdraw South Pass Public Land   • Silverton Preserving Lofty Symbol of Mining Era   • Hijackers Make Off With 660 Pounds of Gold   • Prospecting With a Magnetometer   • 1999 Tables of Content   • Lighting the Way Underground 1860-1940s   • Millie's Tailings   • Picks & Pans: Crevicing & Sniping for Placer Gold   • Looking Back   • Gold in Sonora   • Forest Service Boss Quits in Bull Trout Flap   • Melman on Gold & Silver   • European Gold Miners Seek Clarification Letter   • Mining Stock Quotes and Mineral & Metal Prices   • Squeezing Diamond Into Graphite

Free:
Legislative Update