Prospecting With a Magnetometer
December 1999 by Edgar B. Heylmun, PhDSwedes were the first to note variations in the Earth's magnetic field, circa 1640, and they were the first to use the dip needle. They made the first magnetometer in 1870.
In this proposed rule, BLM is seeking to amend regulations to respond to a recent law that continues to require claimants to pay location and maintenance fees on unpatented mining claims or sites and to provide annual maintenance fee waivers to small miners until September 30, 2001.
Greenstone is a hard, tough, altered igneous rock, usually dark green in color. The term “greenstone” has been loosely applied to all greenish rock, including peridotite, dunite, jade, serpentine, and even hydro thermally altered rocks in mining districts. True greenstone is...
Due to the lockdown, I spent lots of time indoors this spring and I decided to add a drone as a faithful mate in my research.
In Chicken I had my first experience with the famous Alaska blue clay, sometimes called the blue layer. The blue layer is where the best fine gold was to be found.
Q: Can and should you remove their poles and notice right then and there or should you wait until you have convinced them of their trespass?
Authorities filed criminal charges against one of the largest gold refiners in the United States, accusing the company of participating in an illegal, $4.5 million money-laundering operation involving tainted gold from South America for at least four months.
From the point of view of the precious metals, an upside breakout would have clear inflationary implications, which should benefit...
The Bawl Mill • Over the Divide • 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 • 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