All Articles
Mineralized Calderas in Colorado
May 2002 by Edgar B. Heylmun, PhD
A caldera is a large circular volcanic depression caused by collapse due to the removal of molten magma from an underlying magma chamber. The removal of magma is due to explosive venting of lava and pyroclastic material.
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Mining Journal Contest—How Much Is That Old Mining Journal Worth?
November 2008
It could be worth $250! We are on a quest to find out who has the oldest surviving copy of our monthly Journal.
It could be worth $250! We are on a quest to find out who has the oldest surviving copy of our monthly Journal.
Legislative and Regulatory Update
August 2014
• No Adventure Pass needed
• Supreme Court of Canada rules on aboriginal title claims
• No agreement reached in suction gold dredge permitting case
• No Adventure Pass needed
• Supreme Court of Canada rules on aboriginal title claims
• No agreement reached in suction gold dredge permitting case
The Fire Within
October 2002
I can’t remember the exact day, but I do remember I was 11 years old when my father Charlie Sr. took me prospecting for the first time. That’s the day the fire and passion for gold was first ignited in me. I was born and raised in Grand Forks, British Columbia, and was lucky enough to have a gold bearing creek about 10 miles from our home.
I can’t remember the exact day, but I do remember I was 11 years old when my father Charlie Sr. took me prospecting for the first time. That’s the day the fire and passion for gold was first ignited in me. I was born and raised in Grand Forks, British Columbia, and was lucky enough to have a gold bearing creek about 10 miles from our home.
The Livengood-Tolovana Mining District
June 2006
In 1914, Livengood went from a tent city to a collection of wooden false fronted structures and log cabins. In 1962, 48 years later, our old Chevy pickup rumbled in off the gravel road. A cloud of dust surrounded us as the hot Interior sun beat down on...
In 1914, Livengood went from a tent city to a collection of wooden false fronted structures and log cabins. In 1962, 48 years later, our old Chevy pickup rumbled in off the gravel road. A cloud of dust surrounded us as the hot Interior sun beat down on...
Excavator Testing Wet Placer Ground
April 2013
The excavator or backhoe has become the tool of choice for testing placer ground. These machines are the best way to explore and sample a placer deposit if the ground is not too wet or frozen and bedrock is not beyond the reach of the machine.
The excavator or backhoe has become the tool of choice for testing placer ground. These machines are the best way to explore and sample a placer deposit if the ground is not too wet or frozen and bedrock is not beyond the reach of the machine.
Legislative and Regulatory Update
October 2005
• Roadless Rule back in court again
• New mining regulations considered in Europe
• PLP in court on behalf of miners
• Karuk Tribe to appeal
• NEPA rewrite drive gets boost from Katrina
• Roadless Rule back in court again
• New mining regulations considered in Europe
• PLP in court on behalf of miners
• Karuk Tribe to appeal
• NEPA rewrite drive gets boost from Katrina
Gemstones to Die For
November 2014
Some gems can potentially poison you, make you sterile and even make you forget who you are.
Some gems can potentially poison you, make you sterile and even make you forget who you are.
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The Bawl Mill
• Our Readers Say
• California Wilderness Coalition and The Nature Conservancy Recruit Government Employees to Carry Out Huge Land Grab
• Drywashing Rules Clarified
• The Keystone Gold-Copper District, Medicine Bow Mountains, Southeastern Wyoming
• Picks & Pans: Mining Tungsten Ore—A Case History
• Gold in Oregon
• Aussie Gold—A Look at the Northern Territory
• The Phoenix Gold Mine: A Brief History
• Calico Mine
• Mining Stock Quotes and Mineral & Metal Prices
• Looking Back
• Melman on Gold & Silver
