New Arsenic Study Supports Tougher Standards
October 2001 by Associated PressA National Academy of Sciences report shows that the Environmental Protection Agency greatly underestimated the cancer risks of arsenic in drinking water, according to EPA officials and other environmental experts familiar with the report.
Expert Instruction • The Latest Equipment
The Event of 2011 You Don't Want to Miss!
The favorable geology of the northeastern and central parts of the Seven Troughs Range are the parts most interesting to prospectors. They are underlain by a thick sequence of Tertiary volcanic rocks, mostly rhyolites and andesites.
Having spent 33 years prospecting off and on in this area, this writer has become very familiar with the region, its mines, the gold (hardrock and placer), wildlife, weather, topography, and history—it has been a friend to me.
• Environmental solution becomes the problem
• How much money are you forfeiting?
• The unbearable snowman
Commonly these layers contain small particles of gold and platinum, and in places where they are sufficiently concentrated, the metallic particles are abundant enough to be extracted profitably.
The Bawl Mill • Our Readers Say: • Placer & Lode Gold Deposits • Spanish Silver in Arizona • Hog Mountain Mining, Past and Future • Picks & Pans: Dredging Costa Rica • Gold in Texas • The Goldhill Mining District • Miners Resume Search for Platinum Near Platinum • Discoloring Assay Beads • Tons of Gold Buried Under World Trade Center • Gold Rush Ship Uncovered in San Francisco • Mining Stock Quotes and Mineral & Metal Prices • Melman on Gold & Silver • The Financial Repercussions of the WTC Tragedy • Permit Appears Likely for Rock Creek Mine