May 1999 by Staff• Azco Mining Inc.
• Hecla Mining Co.
• Canyon Resources Corp.
• Royal Oak Mines
• BHP World Minerals
• Pacific North West Capital
Even before Pelton relocated in San Francisco in 1888, many other competitive foundries and machine shops chose to enter the water wheel market. These firms were already busy with the mining trade, producing hoists, stamp mills, ore carts, Cornish pumps, crushers, grinders, compressors and drills.
Continuing northward and crossing the Consumnes River along California’s famed Highway 49, the “Golden Highway” leads through the heart of the Mother Lode countryto El Dorado County. This is where the Gold Rush began...
I know big mining companies use cyanide and other leach systems to recover gold from ore. Is this the only economically feasible way to recover the values?
Just recently, the miners hit another big pocket, this time with nearly 1,000 ounces of gold. Some of the rich specimens were as big as a fist and others were in the form of smaller pieces.
Congress passed Section 404 of the Clean Water Act (CWA), which was originally called the Federal Water Pollution Control Act, 33 USC 1344, in 1972. Section 404 authorized the US Army Corps of Engineers (the Corps) to issue permits “for the discharge of dredged or fill material into the navigable waters at specified disposal sites.”
Centrifugal bowls versus jigs
There are two separate issues threatening suction dredging in California.
The Bawl Mill • Mining Law—A Short History • Industry Urges Restraint on Mining Reforms • Environmentalists Back FS on Mining Withdrawl • Our Readers Say • Open Letter to the BLM • Huge Nugget To Be Auctioned • Platinum Group Metals • Gold at Mercury Mines • The Lovitt Mine • Picks & Pans: "Eye-Balling" for Alaskan Gold • Melman on Gold & Silver • Mining Stock Quotes and Mineral & Metal Prices • Looking Back • Oil and Gas in Washington • As Millennium Nears, Copper No Longer King in Arizona