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Special Rock
December 2006 by Robert Abendschein

Flat-Fault Gold in Sonora, Mexico
Mexico is not noted for gold, but is better known for silver and copper. However, the states of Chihuahua and Sonora, in northwestern Mexico, contain some sizeable gold deposits. A number of these deposits were mined during the boom of 1982-2002. One operation that has remained active up to the present is La Herradura Mine...
WSGS Releases New Geologic Maps
The Wyoming State Geological Survey announced ten new geologic maps have been completed and are now available.
Swiss Mining Company Demands Compensation From Bolivia
Glencore International AG demanded compensation from Bolivia’s government for nationalizing a tin smelter owned by the Swiss mining company.
Update on MMAC & PLP
The Investigation
Six sticks of dynamite had been found in the glove compartment of an abandoned car back in 1972. This started an investigation by every level of law enforcement, including the federal government, in the Silver City, New Mexico area.
Some Tips and Tricks for Dredgers: Determining Pulley Size and Belt Length
If Epd is larger, then the compressor will be spinning faster than the manufacturer’s maximum specified RPM and might destroy itself. If this happens, then the compressor again might not produce enough air to support a diver. Neither is a desired outcome.
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