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Sixteen to One Takes on MSHA

Letter from Sixteen to One President Mike Miller to Congressman Wally Herger (Chico) requesting a Congressional investigation into the activities of the Mine Safety and Health Administration

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Operation And Application Of Magnetometers


The technology used in these devices has advanced greatly in the last century. Many different types of physical effects are used to measure these magnetic fields and we will briefly look at some of these.

Designing and Evaluating Placer Gold Recovery Plants


For this article, I am focusing on industrial production plants that can handle 10 cubic yards per hour or more and would be fed by a loader or other heavy equipment...

Detecting at the Sixteen to One Mine


A while back I was given a very special opportunity to take my metal detector to one of the most famous gold mines in all of California, the Original Sixteen to One mine in Alleghany.

A New Look at Old Mines


Exploration companies are actively looking for properties with profitable potential, even if the ground was once cast off as too low in grade to be economically viable. This is especially true in states that are reasonably friendly toward...

Samuel Franklin Hunt Nevada’s “Rio Tinto”


At the well-known Rio Tinto copper district, Huelva, in southwestern Spain, large quantities of copper were found beneath a gossan of hematite at an average depth of 100 feet. The deposits were first mined during Roman times.

Melman on Gold & Silver


As laws become cluttered, difficult to understand and almost impossible to enforce both effectively and economically, they are bound to drag down industry and commerce inside a welter of complications.

How PGMs Affect Assay Beads


Most fire assayers are trained to observe the cupelled beads very carefully, noting any discoloring or surface roughness that might indicate that one or more of the platinum group metals (PGMs) are present. The “clues and tests” I have included in this article stem from several sources, including my 35 years of experience performing torch assays...

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The Bawl Mill   • Over the Divide   • Our Readers Say   • Letter from the Editor to our Readers and Advertisers   • Administration Considers Bypassing Congress   • First Woman to Draw Mining Pension   • Small Mine Selective Blasting   • Mohave Mountain Placers, Arizona   • High Court to Reconsider Wilderness Water Rights   • Picks & Pans: Gold Mining on Joie Osgood Ranch   • Gold   • Company Notes   • Millie's Tailings   • Placer PGMs in Alaska   • Mogollon—New Mexico's Remote Gold Camp   • ICMJ 9th Annual Photo Contest Results   • The Other Minerals of Mt. Diablo   • Melman on Gold & Silver   • Mining Stock Quotes and Mineral & Metal Prices   • Looking Back

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