Mining is the extraction of valuable geological materials from the Earth and other astronomical objects. Mining is required to obtain most materials that cannot be grown through agricultural processes, or feasibly created artificially in a laboratory or factory. Ores recovered by mining include metals, coal, oil shale, gemstones, limestone, chalk, dimension stone, rock salt, potash, gravel, and clay. The ore must be a rock or mineral that contains valuable constituent, can be extracted or mined and sold for profit. Mining in a wider sense includes extraction of any non-renewable resource such as petroleum, natural gas, or even water.
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.
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. World gold production was 3,612 tons in 2022.
Yanacocha is a gold mine in the Cajamarca region of the Northern Highlands of Peru. Considered to be the fourth largest gold mine in the world, it produced 0.97 million ounces of gold in 2014. The 251-square kilometer open pit mine is situated about 30 kilometers north of Cajamarca, in high pampa, straddling the watershed. The operation is a joint venture between Newmont Goldcorp, Compañia de Minas Buenaventura (43.65%) and the International Finance Corporation (5%).
AngloGold Ashanti Limited is a global gold mining company, formed in 2004 by the merger of AngloGold and the Ashanti Goldfields Corporation. As of 2022, it was a global gold producer with 21 operations on four continents, listed on the New York, Johannesburg, Accra, London and Australian stock exchanges, as well as the Paris and Brussels bourses, but left the Johannesburg exchange in 2023. As of May 2023, it was the world’s fourth-largest gold miner with assets in Ghana, Australia, the US and Argentina.
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.
Kenyasi is a town in Ghana and it's the capital of the Asutifi North District in the Ahafo Region. Kenyasi is a combination of two towns: Kenyasi No.1 and Kenyasi No.2 Kenyasi has abundance of Gold resources hence Newmont, Ghana Ahafo mine having their operations in the area since 2007. Kenyasi has direct routes to places such as Mim, Ahafo( 24 km); Hwidiem ( 5 km); Ntotroso (13 km). Notable secondary educational institution in this town is the OLA Girls Senior High School (Kenyasi)
Gold Fields Limited is one of the world's largest gold mining firms. Headquartered in Johannesburg, South Africa, the company is listed on both the Johannesburg Stock Exchange (JSE) and the New York Stock Exchange (NYSE). The firm was formed in 1998 with the amalgamation of the gold assets of Gold Fields of South Africa Limited and Gencor Limited. The company traces its roots back to 1887, when Cecil Rhodes founded Gold Fields of South Africa Limited. As of 2019, Gold Field was the world's eighth-largest producer of gold.
Buyat Bay is small bay on the south coast of Minahassa Peninsula on the north of Sulawesi island of Indonesia. Since 1996, Newmont Mining Corporation under its subsidiary company, PT Newmont Minahasa Raya, has been using the bay as the tailing dumping ground for its gold mining activities. In 2004, local people in the area complained several unusual health problems which further suspected Newmont's for breaching the mining waste level regulation to had contaminated the area with hazardous materials. The Indonesian activist group on environment, WALHI, claimed that Newmont has been dumping 2,000 tonnes of mine waste into the bay daily. A legal case between the government of Indonesia versus one of the company's top executive is still ongoing.
Romania ranks tenth in the world in terms of the diversity of minerals produced in the country. Around 60 different minerals are currently produced in Romania. The richest mineral deposits in the country are halite.
The Mining industry of Ghana accounts for 5% of the country's GDP and minerals make up 37% of total exports, of which gold contributes over 90% of the total mineral exports. Thus, the main focus of Ghana's mining and minerals development industry remains focused on gold. Ghana is Africa's largest gold producer, producing 80.5 t in 2008. Ghana is also a major producer of bauxite, manganese and diamonds. Ghana has 20 large-scale mining companies producing gold, diamonds, bauxite and manganese; over 300 registered small scale mining groups; and 90 mine support service companies.Other mineral commodities produced in the country are natural gas, petroleum, salt, and silver.
The 2000 Baia Mare Cyanide spill was a leak of cyanide near Baia Mare, Romania, into the Someș River by the gold mining company Aurul, a joint-venture of the Australian company Esmeralda Exploration and the Romanian government.
Pueblo Viejo mine is an open-pit gold mine in the Sánchez Ramírez Province of the Dominican Republic. It is the largest gold mine in Latin America and fifth largest in the world. The mine is run by Pueblo Viejo Dominicana Corporation (PVDC), which is 60% owned by Barrick Gold and 40% owned by Newmont Goldcorp.
The Tarkwa mine is one of the largest gold mines in the Ghana and in the world. The mine is located in the south-west of the country in the Western Region. The mine has estimated reserves of 15.1 million oz of gold.
The Ahafo Region is a newly created region in Ghana with Goaso as its capital. The region has administrative and governmental legislature like all the ten already existing regions in Ghana. The region was carved out of the south-eastern part of the Brong Ahafo Region and was in fulfillment of a campaign promise made by New Patriotic Party. Prior to the 2016 Ghanaian general election, the then candidate Nana Akufo-Addo declared that when elected, he would explore the possibility of creating new regions out of some of the existing regions in Ghana in order to bring government closer to citizens.
Ntotroso is a town in the Asutifi North District in the Ahafo Region of Ghana. The distance from Ntotroso to Kenyasi, the District capital is 13 km while that of Sunyani, the Bono regional capital is 41 km. Notable tertiary institution in this town, is the Ntotroso Nursing college.
Akyem mine is an open-pit gold mine near New Abirem in the Eastern Region of Ghana. It is owned by Newmont. The mine was developed in 2005, with commercial production beginning in 2013.
