The present great demand for tungsten due to world conditions has resulted in an increase of tungsten ore dressing problems for our metallurgists. The flowsheet study shown here was recently developed for treatment of a very complex tungsten-gold ore. The flowsheet study previously shown for tungsten was devised for a simple tungsten ore free of … Read more
The flowsheet in this study was designed to treat 500 tons per day of a complex base metal ore containing gold and silver values. The presence of free gold offers opportunity to recover these values in the grinding circuit so that the gold could be amalgamated, and marketed directly to the mint. The ore as … Read more
Introduction to Gold and Silver Leaching The cyanide leaching process is the most important method ever developed for extracting gold from its ores. The early development of the process is attributed to a Scotchman, John Stewart Mac Arthur, in collaboration with the Forrest brothers. The method was introduced into South Africa in 1890. From there it spread … Read more
An illegal miner was found in the Osa Peninsula’s Corcovado National Park, in Costa Rica, where he got lost almost two weeks ago. Joel Cerdas Solórzano, locally known as “Pizote the gold miner”, went missing on January 23 while illegally mining gold inside the boundaries of the park. Three days later, a rescue team composed of officials from the National System … Read more
A bacteria-rich process currently being used in Barberton, a town in the Mpumalanga province of South Africa, can help liberate ultra-fine gold locked in sulphide crystals. The experiment, called Biox technology, is happening in three mines owned by Pan African Resources. Besides these three pits, there are other five gold mines around the world currently using the biological oxidation … Read more
Despite the fact that the mining industry is living dark times, especially due to the downfall of gold’s price, the company Yamana Gold is definitely developing its Cerro Moro gold and silver project. The deposit, located in the southern Argentine province of Santa Cruz, will move forward thanks to an initial investment of $450 million. … Read more
Each country’s central bank is usually known to hold gold reserves that basically just sit in vaults for years. However, the amount of gold each nation possesses represents, in most cases, a big part of its fortune. The United States, for instance, has more than 8,000 tonnes of gold. But 2013 was tough for some … Read more
There are currently 115 million children with ages from five to 17 years old who work in hazardous occupations worldwide, the United Nations International Labor Organization estimates. Among them, about a million children work in the mining industry. Hundreds of maybe even thousands of them live in the Philippines. Recently, the Center for Investigative Reporting, in collaboration with the … Read more
Gold has been going through a tough time with the downfall of its price, but that doesn’t make it any less valuable. Actually, gold is still the commodity that helps us define the value of things, despite the fact that it is extremely rare. Did you know that? Maybe not… And there are probably a … Read more
The big mining company AngloGold Ashanti is testing a new technology, created to substantially increase South Africa’s gold reserves. The firm is betting on autonomous deep level mining to protect its workers and increase production and revenue. Miners cannot go deeper than five kilometers into mines due to safety risks. Although AngloGold’s deepest mine – the … Read more