September 1999 by Guest Writerby Henry E. Hilliard
Excerpted from USGS "1998 Annual Review"
Marketing other minerals recovered while gold mining
While recovery rates are important, they must necessarily be secondary to the volume of material processed. Running more material at lower recovery rates is generally preferable to increasing the efficiency of the system.
Panama is a long, narrow isthmus, 30,200 square miles in area, that separates Costa Rica from Colombia. It is best noted for the Panama Canal, which is now under the control of the Panamanian government, aided by the United States. The canal bisects the country and is an engineering marvel that was opened in 1914.
Rapid City, S.D. (AP)—Scientists and a team of South Dakotans have submitted a $281 million, five-year plan to turn Homestake Mine in Lead into the world’s largest underground laboratory.
Ask leading historians to name Colorado's top 10 builders and the list quickly grows to 50 people. The list includes visionaries, scoundrels and gamblers.
The box sat in a hallway and employees began using it for impromptu cricket games, no knowing what it contained.
The single most important question to be answered when evaluating a placer deposit is: “How much is it worth?” Accurate sampling of placer gravels is essential to obtain a reasonable estimate of the total gold values contained in the deposit.
The Bawl Mill • Over the Divide • Our Readers Say • Feds Eye Restrictions on AZ Archaeological Sites • IMF Reconsidering Gold Sales to Finance Debt • Governors Focus on Aid for Laid-off Miners • Nevada Counties, Towns Get Forest Service Grants • Labor Dept. Approves Aid to Laid-off Nevada Miners • Company Notes • ISEE Celebrates 25 Years • Picks & Pans: Basic Dry Washing Operations in Gold Placer Mining • Washington Miner Wins Poetry Contest • Gold Coin Sales Boosted by Low Prices • The Klamath Mountains • Silver Posts Best Price in 11 Years—Strong Investment Interest and Steady Demand Cited • Historic Mining at Mount Diablo, CA • Gold in the Drum Mountains • Melman on Gold & Silver • Mining Stock Quotes and Mineral & Metal Prices • Looking Back