Gold cyanidation is a hydrometallurgical technique for extracting gold from low-grade ore by converting the gold to a water-soluble coordination complex. It is the most commonly used leaching process for gold extraction. Cyanidation is also widely used in the extraction of silver, usually after froth flotation.
San Juan Province is a province of Argentina, located in the western part of the country. Neighbouring provinces are, moving clockwise from the north, La Rioja, San Luis and Mendoza. It borders with Chile to the west.
Barrick Gold Corporation is a mining company that produces gold and copper with 16 operating sites in 13 countries. It is headquartered in Toronto, Ontario, Canada. It has mining operations in Argentina, Canada, Chile, Côte d'Ivoire, Democratic Republic of the Congo, Dominican Republic, Mali, Papua New Guinea, Saudi Arabia, Tanzania, the United States and Zambia. In 2019, it produced 5.5 million ounces of gold at all-in sustaining costs of $894/ounce and 432 million pounds of copper at all-in sustaining costs of $2.52/pound. As of 31 December 2019, the company had 71 million ounces of proven and probable gold reserves.
Newmont Corporation is an American gold mining company based in Greenwood Village, Colorado. It is the world's largest gold mining corporation. Incorporated in 1921, it owns gold mines in Nevada, Colorado, Ontario, Quebec, Mexico, the Dominican Republic, Australia, Ghana, Argentina, Peru, and Suriname. In addition to gold, Newmont mines copper, silver, zinc and lead.
Gold mining is the extraction of gold by mining.
Gold extraction is the extraction of gold from dilute ores using a combination of chemical processes. Gold mining produces about 3600 tons annually, and another 300 tons is produced from recycling.
Goldcorp Inc. was a gold production company headquartered in Vancouver, British Columbia, Canada. The company stood among the largest gold producers in the world, employed about 15,800 people worldwide, engaged in gold mining and related activities including exploration, extraction, processing and reclamation. Goldcorp’s operating assets included eleven mines in North and South America.
The Jáchal River is a river in the province of San Juan, Argentina. It is part of the Desaguadero River basin, and one of the most important permanent watercourses in the province, with an average flow of 9 cubic metres per second (320 cu ft/s). It is born from the confluence of the Río de la Palca and the Blanco River, in the northwest of San Juan.
Mercur is a historical hard rock mining ghost town in Tooele County, Utah, United States. In 1891, it became the site of the first successful use of the cyanide process of gold extraction in the United States, the dominant metallurgy today. Its elevation above sea level is approximately 2,042 m. The nearby Mercur Gold Mine was re-opened by Barrick Gold in 1985, with mining operations again coming to an end in 1997. The reclamation and restoration project was set to continue up to 2010.
The Porgera Gold Mine is a large gold and silver mining operation in near Porgera, Enga province, Papua New Guinea (PNG), located at the head of the Porgera Valley. The mine is situated in the rain forest covered highlands at an altitude of 2,200 to 2,700 m, in a region of high rainfall, landslides, and frequent earthquakes.
Hutti Gold Mines Limited (Kannada: is a company located in the state of Karnataka, India and engaged in the mining and production of gold. This was first established as Hyderabad Gold Mines in 1947. With the closing of Kolar Gold Fields in 2001, this is the one of the two companies in India which produce gold by mining and processing the gold ore, the other being Manmohan Minerals Industries Pvt. Ltd. Owned by the Government of Karnataka, HGML has two plants located in Hutti and Chitradurga. HGML mines gold from its main gold mine located in Hutti and other satellite mines.
Gold mining in Nevada, a state of the United States, is a major industry, and one of the largest sources of gold in the world. In 2018 Nevada produced 5,581,160 troy ounces, representing 78% of US gold and 5.0% of the world's production. Total gold production recorded from Nevada from 1835 to 2017 totals 205,931,000 troy ounces (6,405.2 t), worth US$322.6 billion at 2020 values. Much of Nevada's gold production comes from large open pit mining using heap leaching recovery.
DeWind was an internationally active producer of wind power plants, originating in Germany. The company was founded in 1995 as Private Limited Company (GmbH) in Luebeck, Germany by seven shareholders. Five of them actively worked in the company. In 2002 the founders sold 100% of the shares to FKI Plc, Loughborough, UK. Nowadays it is based in Irving, Texas, and Hamburg, Germany. DeWind has the legal form of a corporation, and, since September 2009, it has been a subsidiary company of Daewoo Shipbuilding and Marine Engineering (DSME), a large shipbuilder based in Korea. Manufacturing takes place in Lübeck and Round Rock, Texas.
Iglesia is a department of the province of San Juan, Argentina. It is located in the northwest mountainous corner of this province with substantial vegetation. Iglesia is one of the most visited departments in the province, particularly around Rodeo.
Wheaton Precious Metals Corp. is a Canadian multinational precious metals streaming company. It produces over 26 million ounces and sells over 29 million ounces of silver mined by other companies as a by-product of their main operations.
The El Indio Gold Belt is a mineral-rich region spanning the border between Chile and Argentina that contains large quantities of gold, silver and copper. On both sides of the border the belt is located within the Andes. The El Indio mine within the district was the first modern mine in Chile to produce gold as its main product. In Chile the main precious metal containing mineral is enargite. The El Indio belt is bordered in the north by another gold-silver mining district known as the Frontera District. Rodalquilarite, alunite and poughite are some of the minerals present in the area. The deposits of the belt formed during the Late Miocene period.
Pascua-Lama is an open pit mining project of gold, silver, copper and other minerals. Pascua Lama is located in the Andes mountains, in the southern reaches of Atacama Desert, straddling the border between Chile and the Argentina Northwest at an altitude of over 4,500 metres. Toronto-based Barrick Gold, the world's largest gold mining company, is developing the project. Due to its proximity to glaciers, Pascua-Lama has caused controversy and public protest in Chile, including demonstrations and petitions presented to the Chilean government. Chile has not approved the project.
Shandong Gold Group is a state-owned Chinese gold mining company under the provincial government of Shandong. The company is the second-largest producer of gold in China by output and its publicly listed subsidiary ranked #1,898 in the Forbes Global 2000.
Pueblo Viejo mine is an open-pit gold and silver mine in the Sánchez Ramírez Province of the Dominican Republic where mining operations started in 2012 and expect to cease in 2041. It is the largest gold mine in Latin America and 13th largest gold mine in the world. The mine is run by Pueblo Viejo Dominicana Corporation (PVDC), which is 60% owned by Barrick Gold Corporation and 40% owned by Newmont Corporation.
Pressure oxidation is a process for extracting gold from refractory ore.
