Oil Seeps in Arizona
December 2003 by Edgar B. Heylmun, PhDCompared to California, Arizona has virtually no oil seeps. But, the great Permian Basin of West Texas has virtually none either. Arizona has something that neither California nor Texas have, and that is public lands that are open for leasing. The northern half of Arizona has more seeps and is thus of greater interest, but it would be foolish to disregard the southern half because giant oil and natural gas fields could underlie some of the broad desert valleys.
Portable, hand-operated, bellows drywashers have been used for over a hundred years to recover gold in the deserts of Arizona, New Mexico, California and Nevada. Drywashers were considered a last resort over...
Regulators gave final approval to a nickel and copper mine for the Upper Peninsula.
Everyone can deduct all of the ordinary and necessary expenses of conducting a trade or business. But how can anyone hope to refute the IRS’s labeling of their activity as a hobby or, probably more importantly, hope to achieve the label of a tax business?
Lately I’ve been having success utilizing two types of detectors in succession. The first is a pulse induction (PI) detector with a blanket-style antennae, and I follow it up with a very low frequency (VLF) detector.
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.
Shaker tables and jigs
I recently attended two out of three days of the California Mining Association’s Annual Conference in Monterey, California, and found it well worth my 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 • New Life for the Suction Nozzle • Looking Back • Melman on Gold & Silver • Mining Stock Quotes and Mineral & Metal Prices