All Articles
Buell Park Pipe, Arizona
July 2004 by Edgar B. Heylmun, PhD
One of the world’s largest kimberlite pipes is located on the Navajo Indian Reservation in northern Arizona. The pipe is larger than any diamond-bearing pipe in South Africa. It is 16 miles north of Window Rock, the capital of the Navajo Nation.
Additional articles that might interest you...
MCS Index Shows Decrease in Mining Costs
April 1999
The latest Mining Cost Service (MCS) Cost indexes, released on February 26 by Western Mine Engineering, Inc., display a hint of a silver lining in the cloud hanging over the U.S. Mining Industry.
The latest Mining Cost Service (MCS) Cost indexes, released on February 26 by Western Mine Engineering, Inc., display a hint of a silver lining in the cloud hanging over the U.S. Mining Industry.
Ask the Experts
March 2013
Q: Can you please tell me about diamond fluorescense?
Q: Can you please tell me about diamond fluorescense?
Managers at Fault for Two Deaths at Meikle Mine
December 2011
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.
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.
Prospecting for Diamonds in Kimberlite
January 2014
Kimberlite is very difficult for geologists to find, let alone prospectors and rock hounds. This is because kimberlite is rarely exposed on the surface and few people know how to identify the rock.
Kimberlite is very difficult for geologists to find, let alone prospectors and rock hounds. This is because kimberlite is rarely exposed on the surface and few people know how to identify the rock.
Melman on Gold & Silver
April 2016
...the much more important question is this: does this short-term strong rally necessarily portent a genuine turnaround from the metals share bear market that has been ongoing since mid-2011? For a possible answer, we turn to the long-term, five-year XAU chart.
...the much more important question is this: does this short-term strong rally necessarily portent a genuine turnaround from the metals share bear market that has been ongoing since mid-2011? For a possible answer, we turn to the long-term, five-year XAU chart.
Venezuela’s Chavez Halts Mining Projects
November 2005
Venezuelan President Hugo Chavez said his government has decided to review and possibly cancel all mining concessions, and stop issuing new ones to foreign companies.
Venezuelan President Hugo Chavez said his government has decided to review and possibly cancel all mining concessions, and stop issuing new ones to foreign companies.
Miners Attend Meeting in Myrtle Point, Oregon
July 2000
It was "standing room only" as a crowd of approximately 50 interested miners attended a meeting hosted by the Powers Ranger District and Forest Service personnel from the Siskiyou National Forest.
It was "standing room only" as a crowd of approximately 50 interested miners attended a meeting hosted by the Powers Ranger District and Forest Service personnel from the Siskiyou National Forest.
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