Small Mining Operations
From Curiosity to Mine Owner
August 2015 by Scott Harn

The Heavy Minerals in Your Concentrates

Ophir—Possibly the Best Kept Secret in Alaska—Part II

Comments on Gold Rush and Bering Sea Gold Series
The 316 Mining Company has not been all that successful, but does not ever seem to learn from their past mistakes.
All About Trommels and Screens for Placer Gold Recovery
The right speed accumulates only the heavy materials and allows all of the lighter stuff to flow through. This optimum speed is dependent on the size of the gravel you need to move through the system.
All About Hard Rock Drills
There are three basic power sources for rock drills—electricity, gasoline and compressed air. Before we go into big pneumatic drills, we’ll start with a quick rundown of each.
Mining Pegmatite Deposits
With successively lower temperatures as the water mixture cools, new sets of minerals are formed and many of those stable at a higher degree of heat became subject to alteration as the temperature progressively moved lower.
Bering Sea Gold—Part II
In last month’s issue we covered the initial discovery of gold, the subsequent gold rush that occurred around Nome, some of the geology of the area and past production. We’ll conclude the article in this issue with a further examination of the geology and deposit types, discuss the resources...
Subscription Required:
The Bawl Mill
• Ask The Experts
• Ask The Experts
• Detecting During Summer Heat
• Surviving The Boom and Bust Cycle
• A Great Day On The Feather River
• Prospecting for Silver Deposits
• Give That Club Claim A Chance
• Gold and Rare Earth Elements in New Mexico
• Will El Nino Move Gold for Miners and End California Drought?
• Melman on Gold & Silver
• Mining Stock Quotes and Mineral & Metal Prices
Free:
Legislative and Regulatory Update
• MMAC & PLP Update -- Rand Mining District Gets Organized