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Gold mining is the
extraction Extraction may refer to: Science and technology Biology and medicine * Comedo extraction, a method of acne treatment * Dental extraction, the surgical removal of a tooth from the mouth Computing and information science * Data extraction, the pr ...
of
gold Gold is a chemical element with the symbol Au (from la, aurum) and atomic number 79. This makes it one of the higher atomic number elements that occur naturally. It is a bright, slightly orange-yellow, dense, soft, malleable, and ductile ...
resources by
mining Mining is the extraction of valuable minerals or other geological materials from the Earth, usually from an ore body, lode, vein, seam, reef, or placer deposit. The exploitation of these deposits for raw material is based on the econom ...
. Historically, mining gold from
alluvial Alluvium (from Latin ''alluvius'', from ''alluere'' 'to wash against') is loose clay, silt, sand, or gravel that has been deposited by running water in a stream bed, on a floodplain, in an alluvial fan or beach, or in similar settings. ...
deposits used manual separation processes, such as
gold panning Gold panning, or simply ''panning'', is a form of placer mining and traditional mining that extracts gold from a placer deposit using a pan. The process is one of the simplest ways to extract gold, and is popular with geology enthusiasts especia ...
. However, with the expansion of gold mining to
ores Ore is natural rock or sediment that contains one or more valuable minerals, typically containing metals, that can be mined, treated and sold at a profit.Encyclopædia Britannica. "Ore". Encyclopædia Britannica Online. Retrieved 7 April ...
that are not on the surface, has led to more complex extraction processes such as pit mining and gold cyanidation. In the 20th and 21st centuries, most volume of mining was done by large corporations, however the value of gold has led to millions of small, artisanal miners in many parts of the
Global South The concept of Global North and Global South (or North–South divide in a global context) is used to describe a grouping of countries along socio-economic and political characteristics. The Global South is a term often used to identify region ...
. Like all mining,
human rights Human rights are moral principles or normsJames Nickel, with assistance from Thomas Pogge, M.B.E. Smith, and Leif Wenar, 13 December 2013, Stanford Encyclopedia of PhilosophyHuman Rights Retrieved 14 August 2014 for certain standards of hu ...
and
environmental issues Environmental issues are effects of human activity on the biophysical environment, most often of which are harmful effects that cause environmental degradation. Environmental protection is the practice of protecting the natural environment on t ...
are common issues in the gold mining industry. In smaller mines with less regulation, health and safety risks are much higher.


History

The exact date that humans first began to mine gold is unknown, but some of the oldest known gold artifacts were found in the
Varna Necropolis The Varna Necropolis ( bg, Варненски некропол), or Varna Cemetery, is a burial site in the western industrial zone of Varna (approximately half a kilometre from Lake Varna and 4 km from the city centre), internationally c ...
in
Bulgaria Bulgaria (; bg, България, Bǎlgariya), officially the Republic of Bulgaria,, ) is a country in Southeast Europe. It is situated on the eastern flank of the Balkans, and is bordered by Romania to the north, Serbia and North Macedo ...
. The graves of the necropolis were built between 4700 and 4200 BC, indicating that gold mining could be at least 7000 years old. A group of German and Georgian archaeologists claims the Sakdrisi site in southern
Georgia Georgia most commonly refers to: * Georgia (country), a country in the Caucasus region of Eurasia * Georgia (U.S. state), a state in the Southeast United States Georgia may also refer to: Places Historical states and entities * Related to the ...
, dating to the 3rd or 4th millennium BC, may be the world's oldest known gold mine.
Bronze Age The Bronze Age is a historic period, lasting approximately from 3300 BC to 1200 BC, characterized by the use of bronze, the presence of writing in some areas, and other early features of urban civilization. The Bronze Age is the second pri ...
gold objects are plentiful, especially in Ireland and Spain, and there are several well known possible sources. Romans used
hydraulic mining Hydraulic mining is a form of mining that uses high-pressure jets of water to dislodge rock material or move sediment.Paul W. Thrush, ''A Dictionary of Mining, Mineral, and Related Terms'', US Bureau of Mines, 1968, p.560. In the placer mining of ...
methods, such as hushing and ground sluicing on a large scale to extract gold from extensive
alluvial Alluvium (from Latin ''alluvius'', from ''alluere'' 'to wash against') is loose clay, silt, sand, or gravel that has been deposited by running water in a stream bed, on a floodplain, in an alluvial fan or beach, or in similar settings. ...
(loose sediment) deposits, such as those at Las Medulas. Mining was under the control of the state but the mines may have been leased to civilian contractors some time later. The gold served as the primary medium of exchange within the empire, and was an important motive in the
Roman invasion of Britain The Roman conquest of Britain refers to the conquest of the island of Britain by occupying Roman forces. It began in earnest in AD 43 under Emperor Claudius, and was largely completed in the southern half of Britain by 87 when the Stan ...
by
Claudius Tiberius Claudius Caesar Augustus Germanicus (; 1 August 10 BC – 13 October AD 54) was the fourth Roman emperor, ruling from AD 41 to 54. A member of the Julio-Claudian dynasty, Claudius was born to Drusus and Antonia Minor ...
in the first century AD, although there is only one known Roman gold mine at Dolaucothi in west Wales. Gold was a prime motivation for the campaign in
Dacia Dacia (, ; ) was the land inhabited by the Dacians, its core in Transylvania, stretching to the Danube in the south, the Black Sea in the east, and the Tisza in the west. The Carpathian Mountains were located in the middle of Dacia. It ...
when the Romans invaded
Transylvania Transylvania ( ro, Ardeal or ; hu, Erdély; german: Siebenbürgen) is a historical and cultural region in Central Europe, encompassing central Romania. To the east and south its natural border is the Carpathian Mountains, and to the west the A ...
in what is now modern
Romania Romania ( ; ro, România ) is a country located at the crossroads of Central Europe, Central, Eastern Europe, Eastern, and Southeast Europe, Southeastern Europe. It borders Bulgaria to the south, Ukraine to the north, Hungary to the west, S ...
in the second century AD. The legions were led by the emperor Trajan, and their exploits are shown on Trajan's Column in Rome and the several reproductions of the column elsewhere (such as the
Victoria and Albert Museum The Victoria and Albert Museum (often abbreviated as the V&A) in London is the world's largest museum of applied arts, decorative arts and design, housing a permanent collection of over 2.27 million objects. It was founded in 1852 and nam ...
in
London London is the capital and List of urban areas in the United Kingdom, largest city of England and the United Kingdom, with a population of just under 9 million. It stands on the River Thames in south-east England at the head of a estuary dow ...
). Under the Eastern Roman Empire Emperor Justinian's rule, gold was mined in the Balkans, Anatolia, Armenia, Egypt, and Nubia. In the area of the
Kolar Gold Fields Kolar Gold Fields (K.G.F.) is a mining region in K.G.F. taluk (township), Kolar district, Karnataka, India. It is headquartered in Robertsonpet, where employees of Bharat Gold Mines Limited (BGML) and BEML Limited (formerly Bharat Earth Mov ...
in Bangarpet Taluk, Kolar District of
Karnataka Karnataka (; ISO 15919, ISO: , , also known as Karunāḍu) is a States and union territories of India, state in the southwestern region of India. It was Unification of Karnataka, formed on 1 November 1956, with the passage of the States Reor ...
state, India, gold was first mined prior to the 2nd and 3rd century AD by digging small pits. (Golden objects found in
Harappa Harappa (; Urdu/ pnb, ) is an archaeological site in Punjab, Pakistan, about west of Sahiwal. The Bronze Age Harappan civilisation, now more often called the Indus Valley Civilisation, is named after the site, which takes its name from a ...
and Mohenjo-daro have been traced to Kolar through the analysis of impuritiesthe impurities include 11%
silver Silver is a chemical element with the symbol Ag (from the Latin ', derived from the Proto-Indo-European ''h₂erǵ'': "shiny" or "white") and atomic number 47. A soft, white, lustrous transition metal, it exhibits the highest electrical ...
concentration, found only in KGF ore.) The Champion reef at the
Kolar gold fields Kolar Gold Fields (K.G.F.) is a mining region in K.G.F. taluk (township), Kolar district, Karnataka, India. It is headquartered in Robertsonpet, where employees of Bharat Gold Mines Limited (BGML) and BEML Limited (formerly Bharat Earth Mov ...
was mined to a depth of during the
Gupta period The Gupta Empire was an ancient Indian empire which existed from the early 4th century CE to late 6th century CE. At its zenith, from approximately 319 to 467 CE, it covered much of the Indian subcontinent. This period is considered as the Gold ...
in the fifth century AD. During the
Chola The Chola dynasty was a Tamil thalassocratic empire of southern India and one of the longest-ruling dynasties in the history of the world. The earliest datable references to the Chola are from inscriptions dated to the 3rd century BCE d ...
period in the 9th and 10th century AD, the scale of the operation grew. The metal continued to be mined by the eleventh century kings of South India, the
Vijayanagara Empire The Vijayanagara Empire, also called the Karnata Kingdom, was a Hindu empire based in the region of South India, which consisted the modern states of Karnataka, Andhra Pradesh, Tamil Nadu, Kerala, Goa and some parts of Telangana and Mahar ...
from 1336 to 1560, and later by
Tipu Sultan Tipu Sultan (born Sultan Fateh Ali Sahab Tipu, 1 December 1751 – 4 May 1799), also known as the Tiger of Mysore, was the ruler of the Kingdom of Mysore based in South India. He was a pioneer of rocket artillery.Dalrymple, p. 243 He i ...
, the king of
Mysore Mysore (), officially Mysuru (), is a city in the southern part of the state of Karnataka, India. Mysore city is geographically located between 12° 18′ 26″ north latitude and 76° 38′ 59″ east longitude. It is located at an altitude o ...
state and the British. It is estimated that the total gold production in Karnataka to date is 1000 tons. The mining of the Hungarian deposit (present-day Slovakia) primarily around
Kremnica Kremnica (; german: Kremnitz, hu, Körmöcbánya) is a town in central Slovakia. It has around 5,300 inhabitants. The well-preserved medieval town built above important gold mines is the site of the oldest still-working mint in the world. Name ...
was the largest of the
Medieval period In the history of Europe, the Middle Ages or medieval period lasted approximately from the late 5th to the late 15th centuries, similar to the post-classical period of global history. It began with the fall of the Western Roman Empire a ...
in Europe. During the 19th century, numerous
gold rush A gold rush or gold fever is a discovery of gold—sometimes accompanied by other precious metals and rare-earth minerals—that brings an onrush of miners seeking their fortune. Major gold rushes took place in the 19th century in Australia, New ...
es in remote regions around the globe caused large migrations of miners, such as the
California Gold Rush The California Gold Rush (1848–1855) was a gold rush that began on January 24, 1848, when gold was found by James W. Marshall at Sutter's Mill in Coloma, California. The news of gold brought approximately 300,000 people to California f ...
of 1849, the
Victorian Gold Rush The Victorian gold rush was a period in the history of Victoria, Australia approximately between 1851 and the late 1860s. It led to a period of extreme prosperity for the Australian colony, and an influx of population growth and financial capit ...
, and the Klondike Gold Rush. The discovery of gold in the
Witwatersrand The Witwatersrand () (locally the Rand or, less commonly, the Reef) is a , north-facing scarp in South Africa. It consists of a hard, erosion-resistant quartzite metamorphic rock, over which several north-flowing rivers form waterfalls, which ...
led to the
Second Boer War The Second Boer War ( af, Tweede Vryheidsoorlog, , 11 October 189931 May 1902), also known as the Boer War, the Anglo–Boer War, or the South African War, was a conflict fought between the British Empire and the two Boer Republics (the So ...
and ultimately the founding of South Africa. The Carlin Trend of Nevada, U.S., was discovered in 1961. Official estimates indicate that total world gold production since the beginning of civilization has been around and total gold production in Nevada is 1.1% of that, ranking Nevada as one of the Earth's primary gold producing regions. As of 2020, the world's largest gold producer was
China China, officially the People's Republic of China (PRC), is a country in East Asia. It is the world's List of countries and dependencies by population, most populous country, with a Population of China, population exceeding 1.4 billion, slig ...
with 368.3
tonnes The tonne ( or ; symbol: t) is a unit of mass equal to 1000 kilograms. It is a non-SI unit accepted for use with SI. It is also referred to as a metric ton to distinguish it from the non-metric units of the short ton (United States c ...
of gold mined in that year. The second-largest producer of gold was
Russia Russia (, , ), or the Russian Federation, is a transcontinental country spanning Eastern Europe and Northern Asia. It is the largest country in the world, with its internationally recognised territory covering , and encompassing one-ei ...
where 331.1 tonnes was mined in the same year, followed by
Australia Australia, officially the Commonwealth of Australia, is a sovereign country comprising the mainland of the Australian continent, the island of Tasmania, and numerous smaller islands. With an area of , Australia is the largest country by ...
with 327.8 tonnes.


Statistics

Despite its decreasing content in ores, gold production is increasing. This increase can be achieved through ever larger-scale industrial installations as well as innovations, especially in hydrometallurgy.


Methods


Hard rock mining

Hard rock gold mining extracts gold encased in rock, rather than fragments in loose sediment, and produces most of the world's gold. Sometimes
open-pit mining Open-pit mining, also known as open-cast or open-cut mining and in larger contexts mega-mining, is a surface mining technique of extracting rock or minerals from the earth from an open-air pit, sometimes known as a borrow. This form of mini ...
is used, such as at the Fort Knox Mine in central Alaska.
Barrick Gold Corporation 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, Democrat ...
has one of the largest open-pit gold mines in North America located on its Goldstrike mine property in north eastern Nevada. Other gold mines use underground mining, where the ore is extracted through tunnels or shafts. South Africa has the world's deepest hard rock gold mine up to underground. At such depths, the heat is unbearable for humans, and air conditioning is required for the safety of the workers. The first such mine to receive air conditioning was Robinson Deep, at that time the deepest mine in the world for any mineral.


By-product gold mining

Gold is also produced by mining in which it is not the principal product. Large
copper Copper is a chemical element with the symbol Cu (from la, cuprum) and atomic number 29. It is a soft, malleable, and ductile metal with very high thermal and electrical conductivity. A freshly exposed surface of pure copper has a pink ...
mines, such as the Bingham Canyon mine in Utah, often recover considerable amounts of gold and other metals along with copper. Some sand and gravel pits, such as those around Denver, Colorado, may recover small amounts of gold in their wash operations. The largest producing gold mine in the world, the Grasberg mine in Papua, Indonesia, is primarily a copper mine. A modest amount of precious metal is a by-product of sodium production.


Niche, recreational, or historical methods


Placer mining

Placer mining is the technique by which gold that has accumulated in a
placer deposit In geology, a placer deposit or placer is an accumulation of valuable minerals formed by gravity separation from a specific source rock during sedimentary processes. The name is from the Spanish word ''placer'', meaning "alluvial sand". Placer mi ...
is extracted. Placer deposits are composed of relatively loose material that makes tunnelling difficult, and so most means of extracting it involve the use of water or dredging.


=Sluicing

= Using a sluice box to extract gold from placer deposits has long been a very common practice in prospecting and small-scale mining. A sluice box is essentially a man made channel with riffles set in the bottom. The riffles are designed to create dead zones in the current to allow gold to drop out of suspension. The box is placed in the stream to channel water flow. Gold-bearing material is placed at the top of the box. The material is carried by the current through the volt where gold and other dense material settles out behind the riffles. Less dense material flows out of the box as
tailings In mining, tailings are the materials left over after the process of separating the valuable fraction from the uneconomic fraction ( gangue) of an ore. Tailings are different to overburden, which is the waste rock or other material that ove ...
. Larger commercial placer mining operations employ screening plants, or
trommel A trommel screen, also known as a rotary screen, is a mechanical screening machine used to separate materials, mainly in the mineral and solid-waste processing industries.Stessel et al. 1996, pp. 558-568. It consists of a perforated cylindrical dr ...
s, to remove the larger alluvial materials such as boulders and gravel, before concentrating the remainder in a sluice box or jig plant. These operations typically include diesel powered, earth moving equipment, including excavators, bulldozers,
wheel loaders A loader is a heavy equipment machine used in construction to move or load materials such as soil, rock, sand, demolition debris, etc. into or onto another type of machinery (such as a dump truck, conveyor belt, feed-hopper, or railroad car). ...
, and rock trucks.


=Dredging

= Although this method has largely been replaced by modern methods, some dredging is done by small-scale miners using suction dredges. These are small machines that float on the water and are usually operated by one or two people. A suction dredge consists of a sluice box supported by pontoons, attached to a suction hose which is controlled by a miner working beneath the water. State dredging permits in many of the United States gold dredging areas specify a seasonal time period and area closures to avoid conflicts between dredgers and the spawning time of fish populations. Some US states, such as Montana, require an extensive permitting procedure, including permits. Some large suction dredges ( & ) are used in commercial production throughout the world. Small suction dredges are much more efficient at extracting smaller gold than the old ''bucket line''. This has improved the chances of finding gold. Smaller dredges with suction tubes are used to sample areas behind boulders and along potential pay streaks, until "colour" (gold) appears. Other larger scale dredging operations take place on exposed river gravel bars at seasonal low water. These operations typically use a land based excavator to feed a gravel screening plant and sluice box floating in a temporary pond. The pond is excavated in the gravel bar and filled from the natural water table. "Pay" gravel is excavated from the front face of the pond and processed through the floating plant, with the gold trapped in the onboard sluice box and tailings stacked behind the plant, steadily filling in the back of the pond as the operation moves forward. This type of gold mining is characterized by its low cost, as each rock is moved only once. It also has low environmental impact, as no stripping of vegetation or overburden is necessary, and all process water is fully recycled. Such operations are typical on New Zealand's South Island and in the Klondike region of Canada.


=Rocker box

= Also called a cradle, a rocker box uses riffles located in a high-walled box to trap gold in a similar manner to the sluice box. A rocker box uses less water than a sluice box and is well suited for areas where water is limited. A rocking motion provides the water movement needed for the gravity separation of gold in placer material.


Gold ore processing


Cyanide process

Cyanide Cyanide is a naturally occurring, rapidly acting, toxic chemical that can exist in many different forms. In chemistry, a cyanide () is a chemical compound that contains a functional group. This group, known as the cyano group, consists of ...
extraction of gold is the dominant method for obtaining gold. Finely ground rock is treated with a solution of
sodium cyanide Sodium cyanide is a poisonous compound with the formula Na C N. It is a white, water-soluble solid. Cyanide has a high affinity for metals, which leads to the high toxicity of this salt. Its main application, in gold mining, also exploits its hi ...
. The extract is absorbed onto carbon. The gold can be removed from the carbon by using a strong solution of caustic soda and cyanide. Gold cyanide is then converted to relatively pure gold by a variety of methods. The technique using dissolution with alkaline cyanide has been highly developed over recent years. It is particularly appropriate for low grade gold and silver ore processing (e.g. less than 5 ppm gold) but its use is not restricted to such ores. There are many environmental hazards associated with this extraction method, largely due to the high acute toxicity of the cyanide compounds. A major example of this hazard was demonstrated in the
2000 Baia Mare cyanide spill 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. The polluted ...
, when a break in holding pond dam at a mine waste reprocessing facility near
Baia Mare Baia Mare ( , ; hu, Nagybánya; german: Frauenbach or Groß-Neustadt; la, Rivulus Dominarum) is a municipality along the Săsar River, in northwestern Romania; it is the capital of Maramureș County. The city lies in the region of Maramur ...
in northern Romania released approximately of waste water contaminated with heavy metal sludge and up to of cyanide into the
Tisza The Tisza, Tysa or Tisa, is one of the major rivers of Central and Eastern Europe. Once, it was called "the most Hungarian river" because it flowed entirely within the Kingdom of Hungary. Today, it crosses several national borders. The Tisza be ...
River. As a consequence, most countries now have strict regulations for cyanide in plant discharges, and plants today include a specific cyanide-destruction step before discharging their tailings to a storage facility.


Mercury process

Historically, mercury was used extensively in placer gold mining in order to form mercury-gold
amalgam Amalgam most commonly refers to: * Amalgam (chemistry), mercury alloy * Amalgam (dentistry), material of silver tooth fillings ** Bonded amalgam, used in dentistry Amalgam may also refer to: * Amalgam Comics, a publisher * Amalgam Digital, an in ...
with smaller gold particles, and thereby increase the gold recovery rates. Large-scale use of mercury stopped in the 1960s. However, mercury is still used in artisanal and small-scale gold mining (ASGM), often clandestine, gold prospecting.


Business


Small operations

While most of the gold is produced by major corporations, millions of people work independently in smaller,
artisan An artisan (from french: artisan, it, artigiano) is a skilled craft worker who makes or creates material objects partly or entirely by hand. These objects may be functional or strictly decorative, for example furniture, decorative art ...
operations, in some cases illegally. Artisanal mining refers to workers who use rudimentary methods to extract and process minerals and metals. Socially and economically marginalized communities mine to escape
extreme poverty Extreme poverty, deep poverty, abject poverty, absolute poverty, destitution, or penury, is the most severe type of poverty, defined by the United Nations (UN) as "a condition characterized by severe deprivation of basic human needs, includi ...
, unemployment and landlessness. In Ghana, the '' galamseys'' are estimated to number 20,000 to 50,000. In neighboring francophone countries, such workers are called '' orpailleurs''. In Brazil, such workers are called '' garimpeiros''. The word ''garimpeiros'' is also used in
Venezuela Venezuela (; ), officially the Bolivarian Republic of Venezuela ( es, link=no, República Bolivariana de Venezuela), is a country on the northern coast of South America, consisting of a continental landmass and many islands and islets in th ...
,
Suriname Suriname (; srn, Sranankondre or ), officially the Republic of Suriname ( nl, Republiek Suriname , srn, Ripolik fu Sranan), is a country on the northeastern Atlantic coast of South America. It is bordered by the Atlantic Ocean to the nor ...
and
French Guiana French Guiana ( or ; french: link=no, Guyane ; gcr, label= French Guianese Creole, Lagwiyann ) is an overseas department/region and single territorial collectivity of France on the northern Atlantic coast of South America in the Guianas ...
, because many illegal gold prospectors are from Brazil. There are an estimated 10 to 15 million artisanal and small-scale gold miners worldwide. 4.5 million of them are women. Miner's risks include persecution by government, mine shaft collapses, and toxic poisoning from unsafe chemicals used in processing. The high risk of such ventures was seen in the collapse of an illegal mine at Dompoase,
Ashanti Region The Ashanti Region is located in southern part of Ghana and it is the third largest of 16 administrative regions, occupying a total land surface of or 10.2 percent of the total land area of Ghana. In terms of population, however, it is the m ...
, Ghana, on 12 November 2009, when 18 workers were killed, including 13 women. Many women work at such mines as porters. It was the worst mining disaster in Ghanaian history. In order to maximize gold extraction, mercury is often used to
amalgamate Amalgamation is the process of combining or uniting multiple entities into one form. Amalgamation, amalgam, and other derivatives may refer to: Mathematics and science * Amalgam (chemistry), the combination of mercury with another metal **Pan ama ...
with the metal. The gold is produced by boiling away the mercury from the amalgam. Mercury is effective in extracting very small gold particles, but the process is hazardous due to the toxicity of mercury vapour. Especially after the Minamata Convention has been ratified, there are initiatives to replace or reduce the use and emissions of mercury in the extraction of gold. There are an estimated 600,000 children working in illegal artisanal gold mines. For hours, children dig, crush, mill, and haul ore in the hot sun. Children stand in water, digging sand and silt from riverbeds. They carry heavy bags of mud with their heads to designated sieving and washing sites. Children suffer the effects of noise, vibration, overexertion, poor ventilation, and exhaustion. Children's lives are put at risk by rock fall, explosions, the collapsing of tunnels and mine shafts, falling into open shafts and pits, and breathing air polluted by dust and toxic gas. Having immune systems that are not fully developed makes children especially vulnerable to dust and chemical exposure. Injuries include serious respiratory conditions, constant headaches, hearing and sight problems, joint disorders and various dermatological, muscular and orthopaedic ailments and wounds.


Large companies


Adverse effects and responses

Gold mining can significantly alter the natural environment. For example, gold mining activities in tropical forests are increasingly causing deforestation along rivers and in remote areas rich in biodiversity. Other gold mining impacts, particularly in aquatic systems with residual cyanide or mercury (used in the recovery of gold from ore), can be highly toxic to people and wildlife even at relatively low concentrations. However, there are clear moves by many in the
non-governmental organization A non-governmental organization (NGO) or non-governmental organisation (see spelling differences) is an organization that generally is formed independent from government. They are typically nonprofit entities, and many of them are active in ...
community to encourage more environmentally friendly and sustainable business practices in the mining industry. The primary way this is being achieved is via the promotion of so-called 'clean' or 'ethical' gold. The aim is to get all end users/retailers of gold to adhere to set of principles that encourage sustainable mining. Campaigns such as 'No Dirty Gold' are driving the message that the mining industry is harmful (for the reasons noted above), and so must be cleaned up. Also, NGOs are urging the industry and consumers to buy sustainably produced gold.
Human Rights Watch Human Rights Watch (HRW) is an international non-governmental organization, headquartered in New York City, that conducts research and advocacy on human rights. The group pressures governments, policy makers, companies, and individual human ...
produced a report in 2015 that outlined some of challenges faced globally. The report notes that Along with many other reports and articles, this has had the effect of spurring retailers and industry bodies to move toward sustainable gold. Indeed, the World Jewellery Confederation insists that it does all it can to "Deliver a Sustainable and Responsible Jewellery Industry". ''Fairtrade'' and ''Fairmined'' dual certification for
gold Gold is a chemical element with the symbol Au (from la, aurum) and atomic number 79. This makes it one of the higher atomic number elements that occur naturally. It is a bright, slightly orange-yellow, dense, soft, malleable, and ductile ...
was launched across the United Kingdom on 14 February 2011, a joint scheme between
The Fairtrade Foundation The Fairtrade Foundation is a charity based in the United Kingdom that aims to empower disadvantaged producers in developing countries by tackling injustice in conventional trade, in particular by promoting and licensing the Fairtrade Mark, a g ...
and The Association for Responsible Mining. The ''Fairmined'' mark ensures that the gold has been extracted in a fair and responsible manner. The ''Fairtrade Standard for Gold and Associated Precious Metals for Artisanal and Small-Scale Mining'' was adopted in 2013, and the
Fairtrade Foundation A fair trade certification is a product certification within the market-based movement fair trade. The most widely used fair trade certification is FLO International's, the International Fairtrade Certification Mark, used in Europe, Africa, Asi ...
reports on a number of technical uses and responsible suppliers of Fairtrade Certified Gold. The Fairtrade Foundation launched a free course aimed at sales staff responsible for selling gold jewellery in 2017. A UN investigation reported human rights abuses such as sexual exploitation of women and children, mercury poisoning and child labor affecting communities where illegal gold production occurs. The reports said global buyers such as
Switzerland ). Swiss law does not designate a ''capital'' as such, but the federal parliament and government are installed in Bern, while other federal institutions, such as the federal courts, are in other cities (Bellinzona, Lausanne, Luzern, Neuchâtel ...
, through which roughly two-thirds of global trade transits, need to ensure that human rights are respected throughout supply chains.


Safety


Noise

Within the United States, the
Mine Safety and Health Administration The Mine Safety and Health Administration (MSHA) () is a large agency of the United States Department of Labor which administers the provisions of the Federal Mine Safety and Health Act of 1977 (Mine Act) to enforce compliance with mandatory safe ...
(MSHA) has set noise exposure limits for those within the mining industry. These noise exposure guidelines state that the "Permissible Exposure Level" (PEL) of noise is 90 dBA as an 8-hour time-weighted-average. Mine workers exposed to a time-weighted average of at least 85 dBA fall into the "Action Level" in which workers with exposures exceeding that level are placed into a hearing conservation program. The
National Institute for Occupational Safety and Health The National Institute for Occupational Safety and Health (NIOSH, ) is the United States federal agency responsible for conducting research and making recommendations for the prevention of work-related injury and illness. NIOSH is part of the C ...
(NIOSH) has examined noise exposures of gold mine workers. One study found that gold mine workers noise exposures ranged from 165 to 261% of the MSHA PEL. Haul truck operators, load-haul-dump operators, single boom drill operators, and roof bolter operators represented the occupations with the highest noise exposures within gold mines.


See also

* Sibanye Gold * Gold extraction *
Gold rush A gold rush or gold fever is a discovery of gold—sometimes accompanied by other precious metals and rare-earth minerals—that brings an onrush of miners seeking their fortune. Major gold rushes took place in the 19th century in Australia, New ...
*
Gold prospecting Gold prospecting is the act of searching for new gold deposits. Methods used vary with the type of deposit sought and the resources of the prospector. Although traditionally a commercial activity, in some developed countries placer gold prosp ...
* Ore genesis * Peak gold * Quartz reef mining *
Recreational gold mining Recreational gold mining and prospecting has become a popular outdoor recreation in a number of countries, including New Zealand (especially in Otago), Australia, South Africa, Wales (at Dolaucothi and in Gwynedd), in Canada and in the Unit ...
* List of gold nuggets by size Gold mining by country: *
Witwatersrand The Witwatersrand () (locally the Rand or, less commonly, the Reef) is a , north-facing scarp in South Africa. It consists of a hard, erosion-resistant quartzite metamorphic rock, over which several north-flowing rivers form waterfalls, which ...
around
Johannesburg Johannesburg ( , , ; Zulu language, Zulu and xh, eGoli ), colloquially known as Jozi, Joburg, or "The City of Gold", is the largest city in South Africa, classified as a Megacity#List of megacities, megacity, and is List of urban areas by p ...
, South Africa *
Witwatersrand Basin The Witwatersrand () (locally the Rand or, less commonly, the Reef) is a , north-facing scarp in South Africa. It consists of a hard, erosion-resistant quartzite metamorphic rock, over which several north-flowing rivers form waterfalls, which ...
in South Africa * Deepest mines on earth are the gold mines in South Africa *
Gold mining in Brazil Gold mining in Brazil has taken place continually in the Amazon, beginning in the 1690s, and has profoundly transformed the economy of Brazil and other surrounding countries. In the late 17th century, amid the search for indigenous people to us ...
* Gold mining in Africa ** Gold mining in South Africa *
Gold mining in Australia Mining in Australia has long been a significant primary sector industry and contributor to the Australian economy by providing export income, royalty payments and employment. Historically, mining booms have also encouraged population growth v ...
*
Gold mining in the United States Gold mining in the United States has taken place continually since the discovery of gold at the Reed farm in North Carolina in 1799. The first documented occurrence of gold was in Virginia in 1782. Some minor gold production took place in North C ...
** Gold mining in Alaska * City of Gold in
Canada Canada is a country in North America. Its ten provinces and three territories extend from the Atlantic Ocean to the Pacific Ocean and northward into the Arctic Ocean, covering over , making it the world's second-largest country by to ...
*
Gold mining in China Gold mining in the People's Republic of China has made that country the world's largest gold producer. For the year 2007, gold output rose 12% from 2006 to to become the world's largest for the first time—overtaking South Africa, which pro ...
* Gold mining in
India India, officially the Republic of India (Hindi: ), is a country in South Asia. It is the List of countries and dependencies by area, seventh-largest country by area, the List of countries and dependencies by population, second-most populous ...
**
Hatti Gold Mines Hatti Gold Mines, also spelled Hutti, is a notified area council in Raichur district in the Indian state of Karnataka. The mines are owned and operated by Hutti Gold Mines Limited. Hatti is situated in Raichur District, Karnataka State and ...
**
Kolar Gold Fields Kolar Gold Fields (K.G.F.) is a mining region in K.G.F. taluk (township), Kolar district, Karnataka, India. It is headquartered in Robertsonpet, where employees of Bharat Gold Mines Limited (BGML) and BEML Limited (formerly Bharat Earth Mov ...
* Gold mining in
Guyana Guyana ( or ), officially the Cooperative Republic of Guyana, is a country on the northern mainland of South America. Guyana is an indigenous word which means "Land of Many Waters". The capital city is Georgetown. Guyana is bordered by the ...
** Aurora gold mine ** Omai mine ** Toroparu mine * Gold mining in Pakistan: ** Reko Diq Mine ** Saindak Copper Gold Project *
Welsh gold Welsh gold is gold that occurs naturally in two distinct areas of Wales and highly prized because of its origin and scarcity. One area it is found in is north Wales in a band stretching from Barmouth, past Dolgellau and up towards Snowdonia. ...
*
Sukari The Sukari mine or Alsukari mine (Arabic: السكري ''Al-Sukkari'', Egyptian pronunciation: ''El-Sokkari'') is a gold mine located in the Nubian Desert/Eastern Desert near the Red Sea in Egypt, in the south-east of the country in the Red Sea ...
,
Egypt Egypt ( ar, مصر , ), officially the Arab Republic of Egypt, is a List of transcontinental countries, transcontinental country spanning the North Africa, northeast corner of Africa and Western Asia, southwest corner of Asia via a land bridg ...
Gold rushes: *United States: **
Georgia Gold Rush The Georgia Gold Rush was the second significant gold rush in the United States and the first in Georgia, and overshadowed the previous rush in North Carolina. It started in 1829 in present-day Lumpkin County near the county seat, Dahlonega, a ...
(beginning 1828) **
California Gold Rush The California Gold Rush (1848–1855) was a gold rush that began on January 24, 1848, when gold was found by James W. Marshall at Sutter's Mill in Coloma, California. The news of gold brought approximately 300,000 people to California f ...
(1848–1855) ** Pike's Peak Gold Rush (1858–1860) ** Holcomb Valley gold rush (1860s) *British Commonwealth: **
Australian gold rushes During the Australian gold rushes, starting in 1851, significant numbers of workers moved from elsewhere in Australia and overseas to where gold had been discovered. Gold had been found several times before, but the colonial government of Ne ...
(1850s) ***
Victorian Gold Rush The Victorian gold rush was a period in the history of Victoria, Australia approximately between 1851 and the late 1860s. It led to a period of extreme prosperity for the Australian colony, and an influx of population growth and financial capit ...
(1851–1860s) **
Fraser Canyon Gold Rush The Fraser Canyon Gold Rush, (also Fraser Gold Rush and Fraser River Gold Rush) began in 1858 after gold was discovered on the Thompson River in British Columbia at its confluence with the Nicoamen River a few miles upstream from the Thompson's ...
(late 1850s), Canada ** Witwatersrand Gold Rush (1880s), South Africa ** Klondike Gold Rush (1896–1899), Canada ** Central Otago Gold Rush (1860s), New Zealand


References


Further reading

* * Gudde, Erwin G. ''California Gold Camps: A Geographical and Historical Dictionary of Camps, Towns, and Localities Where Gold Was Found and Mined; Wayside Stations and Trading Centers'' (Univ of California Press, 1975). * Hess, Frank L., C. W. Hayes, and W. Lindgren. "Gold mining in the Randsburg quadrangle, California." ''Contributions to Economic Geology: US Geological Survey Bulletin'' (1910): 23–47
Online
* Kelley, Robert L. "Forgotten Giant: The Hydraulic Gold Mining Industry In California." ''Pacific Historical Review'' 23.4 (1954): 343–356
Online
* Paul, Rodman Wilson, ed. ''The California Gold Discovery: Sources, Documents, Accounts, and Memoirs Relating to the Discovery of Gold at Sutter's Mill'' (Talisman Press, 1967), Primary sources. * Rohe, Randall E. "Hydraulicking in the American West: The development and diffusion of a mining technique." ''Montana: The Magazine of Western History'' (1985) 35#2 to: 18–35
Online
* Rohe, Randall. "Origins & Diffusion of Traditional Placer Mining in the West" ''Material Culture'' 18#3 (1986), pp. 127–16
Online
* White F. Miner with a Heart of Gold: biography of a mineral science and engineering educator. Friesen Press, Victoria. 2020. ISBN 978-1-5255-7765-9 (Hardcover), 978-1-5255-7766-6 (Paperback), 978-1-5255-7767-3 (eBook).


External links



{{DEFAULTSORT:Gold Mining Economic geology de:Gold#Gewinnung