Large Scale Mining
EPA Recommends Against Reissuing Permit for PolyMet Mine
June 2022 by Associated Press
PolyMet contends the project will actually reduce mercury and sulfate discharges into the St. Louis River watershed because it will clean up an old iron mining waste pond at the processing plant site.
The “Chuck It Out” Nugget
This was no ordinary nugget. It had not traveled very far from its nearby source, and that did mean a lot, as we were searching for the source of several such nuggets found during a gold rush that occurred in 1859.
Managers at Fault for Two Deaths at Meikle Mine
Two miners were killed in an accident partly because someone wedged a broom handle against a reset button to bypass an alarm that would have shut down the system, federal safety investigators said.
Commercial Placer Mining: Alaska Style
There are currently about 170 commercial-scale placer operations in Alaska. Most of these are small operations with just a few people working; they are often family affairs that operate seasonally only during favorable weather.
Care and Lubrication of a Model 13 Laboratory Wilfley Table
A Wilfley table works best when all of the mineral being run across it (the pulp) is about the same size. For this reason, I took a good look at each of the samples.
What Is Your Grade?
After paying for the mine fleet, mill capital, supplies, fuel, power and labor, at today’s metal prices, does this mine make a profit?
Hecla Fights Bad Actor Label in Montana
Environmental groups last year urged Montana regulators to impose the bad actor designation, and now are seeking to intervene in the case.
Prospecting for Copper Ores—Part II
Copper is a critically important metal that we need to run our modern electronic society, and the long term outlook for this metal is for a steady increase in price.
The Bawl Mill • Why The Paper Change? • Ask The Experts - When do I use detector discrimination? • Ask The Experts - Is gold found in limestone? • Ask The Experts - Can pyrite crystals be the same color as gold? • How to Use BLM’s New Mineral and Land Records System • A Short But Productive Hunt • Blast from the Past: Jeff Casserly Tells His Own Story • Old Dog(Fighter), New Trick • Talking Metal Detectors with Brent Weaver of Garrett • Strategies for Detecting Heavily Pounded Areas—Part III • The Highs and Hazards of Desert Prospecting • Just Feel The Heft of It • Proposed Nebraska Mine Has Sizeable Deposit of Rare Elements • Mining Stock Quotes and Mineral & Metal Prices • Melman on Gold & Silver
Introducing ICMJ’s New Owners: Josh and Sherrie Reinke • Legislative and Regulatory Update • PLP Update