Large Scale Mining
Polymetallic Skarn Deposits
July 2020 by Dean Delahaut
Polymetallic skarn deposits are an interesting class of deposits that can contain a number of different types of metals.
Eastern Oregon Mine Seeks Permits
After a host of companies spent 20 years prospecting, a mining firm is ready to make a play on the $2 billion lode of gold sitting in Eastern Oregon.
The Struggle to Reopen Alaska's Largest Gold Mine
The historical AJ mine, located east of Juneau, Alaska, was considered the largest gold mine in the state at one time. Joe Juneau and Richard Harris struck gold there in 1880, and it has been more recently known as a tourist destination.
Surviving The Boom and Bust Cycle
Back when I was in college, when I first started classes, the demand for new engineers was so strong that every graduate had multiple job offers without even trying.
Partner Withdraws from Pebble Project
One of the partners in a massive and contentious proposed gold and copper mine in Alaska is pulling out, raising questions about the future of the project.
Making A Big Discovery
We sent them a lot of information, including my presentation about the area and its potential. We were excited to learn a couple weeks later that the company was interested in the property.
The Basics of Exploration Leases and Contracts—Part II
This is the point where you might ask, “What do these types of contracts typically look like and how are they negotiated?” Well, that is the topic of this month’s article.
The ABCs of XRF
Fast forward to present day and the XRF has come of age. Pull the trigger on the hand-held device and you get a nearly instant assay of the surface of a rock.
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The Bawl Mill
• Ask The Experts - Can GPR be used for lode prospecting?
• Ask The Experts - How do I extract gold from pyrite?
• Ask The Experts - Should I dig faint sounds with no indicator bars while detecting?
• Ask The Experts - Should the detector sound on iron and nickel in a gold area?
• Hard Rock 101: Micro Blasting
• Sluicing and Detecting Downstream
• Tips and Tricks
• Gold Prospecting for Better or Worse: Does Caliche Grow?
• 10 Keys to Prospecting Like A Pro
• Practical Advice for Milling Hard Rock Ores
• Speed Prospecting for Hard Rock Gold
• Forrest Fenn Treasure Chest Finally Found?
• Melman on Gold & Silver
• Mining Stock Quotes and Mineral & Metal Prices
