Large Scale Mining
Canadian Company Recovers 1,111-Carat Diamond
December 2015 by Scott Harn
It is the second largest gem-quality diamond in history, after the 3,106-carat “Cullinan Diamond” was recovered in South Africa in 1905.
The Montanore Copper and Silver Project
This adit will be nearly 3.5 miles long when it reaches the ore zone.
Reminder: Annual Claim Filings Due
Please note that new mining claims filed on or after September 1, 2019, will be subject to the new fee schedule.
A High Price to Pay
Over the last several months, starting from before I left for Australia, I’ve been working on getting all the 2011 paperwork done for my mining claims. I will admit that some parts of the paperwork I let go until only a week or two before the due date.
Feds Deny Lease Renewals for Minnesota Mine
Two longstanding mineral rights leases that are critical for a proposed large underground copper-nickel mine upstream from the Boundary Waters Canoe Area Wilderness in northeastern Minnesota will not be renewed, two federal agencies announced…
Comstock Mining Gets Approval
The approval, which affects 87 acres on the south end of Silver City, allows the company to move forward with exploration to determine the area's mining potential.
Determining The Optimal Crushing Size for Gravity Recovery
It’s not easy to figure out what is best without testing, and so a certain level of confusion has developed about how small the ore ought to be crushed.
EPA Recommends Against Reissuing Permit for PolyMet Mine
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.
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