The Bawl Mill
July 2005 by Staff• Science fiction?
• It was just environmentally friendly landscaping...
• A very generous pension plan
In twin blows to environmentalists, a Senate panel decided June 22nd to cut a high-profile proposal by President Clinton for buying park land and to limit an effort to restrict waste dumping at some hard-rock mines.
The whole purpose of sampling mineralized ground is to measure the values in a small volume of material that would be representative of a much larger volume of similar material. The key word is representative. Chemical and fire assaying will not accurately represent placer deposits by themselves.
Only the so-called “precious gems” will be considered in this article. They are diamond, ruby, sapphire, and emerald. A “gem” must be rare, hard, and durable, and possess a unique color or quality in order to be classified as a gem.
In Chile, the trapiche (tra-peach-ee) method of milling gold ore began more than 400 years ago. The first trapiche, also known as a Chilean mill, was a stone wheel weighing two or three tons rotating on an axle.
Our Readers Say • The Montana Tunnels Discovery • Spreading the Fever • Forest Service Final Rule—When is a Notice or Plan Required? • Looking Back • New Regulations for Major Precious Metal Dealers • The Paradox Basin—Part I • The Safety in Tax Deductions for Safety • Understanding and Evaluating Desert Mineralization for Nuggetshooters • A Search for Tantalum • Copper is King in Arizona • Mining Stock Quotes and Mineral & Metal Prices • Melman on Gold & Silver