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118-501: Goageb is a former settlement in the ǁKaras Region of southern Namibia . It is situated on the B4 , 31 kilometres (19 mi) south of Bethanie , 69 kilometres (43 mi) west of Seeheim and 249 kilometres (155 mi) east of Lüderitz . Of Nama origin, the name means "twin rivers". Formerly known as Konkiep , an adaptation of the same name, it takes its name from the Konkiep River ,

236-640: A free and fair election . SWAPO won a plurality of seats in the Constituent Assembly with 57% of the popular vote. This gave the party 41 seats, but not a two-thirds majority, which would have enabled it to draft the constitution on its own. The Namibian Constitution was adopted in February 1990. It incorporated protection for human rights and compensation for state expropriations of private property and established an independent judiciary, legislature, and an executive presidency (the constituent assembly became

354-504: A functional group ( amidoxime group ) that selectively adsorbs heavy metals, and the performance of such adsorbents has been improved. Uranium adsorption capacity of the polymer fiber adsorbent is high, approximately tenfold greater in comparison to the conventional titanium oxide adsorbent. One method of extracting uranium from seawater is using a uranium-specific nonwoven fabric as an adsorbent. The total amount of uranium recovered from three collection boxes containing 350 kg of fabric

472-503: A matter of subsequent agreement as to which territories in the foregoing territories will be brought under the trusteeship system and under what terms". The UN requested all former League of Nations mandates be surrendered to its Trusteeship Council in anticipation of their independence. South Africa declined to do so and instead requested permission from the UN to formally annex South West Africa, for which it received considerable criticism. When

590-436: A method of extraction that does not produce the same occupational hazards, or mine tailings, as conventional mining. With regulations in place to ensure the use of high volume ventilation technology if any confined space uranium mining is occurring, occupational exposure and mining deaths can be largely eliminated. The Olympic Dam and Canadian underground mines are ventilated with powerful fans with radon levels being kept at

708-455: A sandstone body. Peneconcordant sandstone uranium deposits, also called Colorado Plateau –type deposits, most often occur within generally oxidized sandstone bodies, often in localized reduced zones, such as in association with carbonized wood in the sandstone. Precambrian quartz-pebble conglomerate-type uranium deposits occur only in rocks older than two billion years old. The conglomerates also contain pyrite. These deposits have been mined in

826-515: A sewage-to-water treatment project in Namibia not only provides citizens with safe drinking water, but also boosts productivity by 6% per year. All pollutants and impurities are removed using cutting-edge "multi-barrier" technology, which includes residual chlorination, ozone treatment, and ultra membrane filtration. Strict bio-monitoring methods are also used throughout the process to ensure high-quality, safe drinking water. On 8 June 2023, Namibia became

944-638: A tributary of the Fish River . This Namibia location article is a stub . You can help Misplaced Pages by expanding it . Namibia Namibia ( / n ə ˈ m ɪ b i ə / , / n æ ˈ -/ ), officially the Republic of Namibia , is a country in Southern Africa . Its western border is the Atlantic Ocean . It shares land borders with Angola and Zambia to the north, Botswana to

1062-467: A very low to practically "safe level" in uranium mines. Naturally occurring radon in other, non-uranium mines, also may need control by ventilation. Heap leaching is an extraction process by which chemicals (usually sulfuric acid ) are used to extract the economic element from ore which has been mined and placed in piles on the surface. Heap leaching is generally economically feasible only for oxide ore deposits. Oxidation of sulfide deposits occurs during

1180-482: A westerly and southwesterly direction to as little as 50 mm (2 in) and less per annum at the coast. The only perennial rivers are found on the national borders with South Africa, Angola, Zambia, and the short border with Botswana in the Caprivi Strip. In the interior of the country, surface water is available only in the summer months when rivers are in flood after exceptional rainfalls. Otherwise, surface water

1298-526: Is by far the largest urban settlement in Namibia. Namibia extends from 17°S to 25°S latitude: climatically the range of the sub-Tropical High Pressure Belt. Its overall climate description is arid, descending from the Sub-Humid [mean rain above 500 mm (20 in)] through Semi-Arid [between 300 and 500 mm (12 and 20 in)] (embracing most of the waterless Kalahari) and Arid [from 150 to 300 mm (6 to 12 in)] (these three regions are inland from

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1416-459: Is concluded. Land reclamation after mining takes different routes, depending on the amount of material removed. Due to the high energy density of uranium, it is often sufficient to fill in the former mine with the overburden, but in case of a mass deficit exceeding the height difference between the previous surface level and the natural water table, artificial lakes develop when groundwater removal ceases. If sulfites, sulfides or sulfates are present in

1534-435: Is extensively used to suppress airborne dust levels. Groundwater is an issue in all types of mining, but in open pit mining, the usual way of dealing with it – i.e. when the target mineral is found below the natural water table – is to lower the water table by pumping off the water. The ground may settle considerably when groundwater is removed and may again move unpredictably when groundwater is allowed to rise again after mining

1652-408: Is generally flat and the soils sandy, limiting their ability to retain water and support agriculture. The Kalahari Desert, an arid region that extends into South Africa and Botswana, is one of Namibia's well-known geographical features. The Kalahari, while popularly known as a desert, has a variety of localised environments, including some verdant and technically non-desert areas. The Succulent Karoo

1770-453: Is home to approximately 500 mineralized breccia pipes and Cripple Creek, Colorado, also is a site that contains breccia pipe ore deposits that is associated with a volcanic pipe. Olympic Dam mine , the world's largest uranium deposit, was discovered by Western Mining Corporation in 1975 and is owned by BHP . Uranium prospecting is similar to other forms of mineral exploration with the exception of some specialized instruments for detecting

1888-449: Is home to over 5,000 species of plants, nearly half of them endemic ; approximately 10 percent of the world's succulents are found in the Karoo. The reason behind this high productivity and endemism may be the relatively stable nature of precipitation. Namibia's Coastal Desert is one of the oldest deserts in the world. Its sand dunes, created by the strong onshore winds, are the highest in

2006-399: Is in principle no different from any other hard rock mining and other ores are often mined in association (e.g., copper, gold, silver). Once the ore body has been identified a shaft is sunk in the vicinity of the ore veins, and crosscuts are driven horizontally to the veins at various levels, usually every 100 to 150 metres. Similar tunnels, known as drifts, are driven along the ore veins from

2124-432: Is now the accepted leading technique for uranium prospecting with worldwide applications for geological mapping, mineral exploration & environmental monitoring . Airborne gamma-ray spectrometry used specifically for uranium measurement and prospecting must account for a number of factors like the distance between the source and the detector and the scattering of radiation through the minerals, surrounding earth and even in

2242-530: Is nowadays commonly sold on the uranium market as U 3 O 8 . While some nuclear power plants – most notably heavy water reactors like the CANDU – can operate with natural uranium (usually in the form of uranium dioxide ), the vast majority of commercial nuclear power plants and many research reactors require uranium enrichment , which raises the content of U from the natural 0.72% to 3–5% (for use in light water reactors ) or even higher , depending on

2360-441: Is practically limitless with respect to world-wide demand. That is to say, if even a portion of the uranium in seawater could be used the entire world's nuclear power generation fuel could be provided over a long time period. Some proponents claim this statistic is exaggerated. Although research and development for recovery of this low-concentration element by inorganic adsorbents such as titanium oxide compounds has occurred since

2478-500: Is pumped down drill holes into the uranium ore deposit where it dissolves the ore minerals. The uranium-rich fluid is then pumped back to the surface and processed to extract the uranium compounds from solution. In conventional mining, ores are processed by grinding the ore materials to a uniform particle size and then treating the ore to extract the uranium by chemical leaching . The milling process commonly yields dry powder-form material consisting of natural uranium, " yellowcake ", which

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2596-417: Is restricted to a few large storage dams retaining and damming up these seasonal floods and their run-off. Where people do not live near perennial rivers or make use of the storage dams, they are dependent on groundwater. Even isolated communities and those economic activities located far from good surface water sources, such as mining, agriculture, and tourism, can be supplied from groundwater over nearly 80% of

2714-559: Is significantly more productive than the Namib Desert. As summer winds are forced over the Escarpment, moisture is extracted as precipitation. The Bushveld is found in north-eastern Namibia along the Angolan border and in the Caprivi Strip. The area receives a significantly greater amount of precipitation than the rest of the country, averaging around 400 mm (16 in) per year. The area

2832-469: Is situated at the southern edge of the tropics; the Tropic of Capricorn cuts the country about in half. The winter (June – August) is generally dry. Both rainy seasons occur in summer: the small rainy season between September and November, and the big one between February and April. Humidity is low, and average rainfall varies from almost zero in the coastal desert to more than 600 mm (24 in) in

2950-434: Is used for thinner, flatter ore bodies. In this method the ore body is first divided into blocks by intersecting drives, removing ore while so doing, and then systematically removing the blocks, leaving enough ore for roof support. The health effects discovered from radon exposure in unventilated uranium mining prompted the switch away from uranium mining via tunnel mining towards open cut and in-situ leaching technology,

3068-667: The Blind River – Elliot Lake district of Ontario, Canada, and from the gold-bearing Witwatersrand conglomerates of South Africa. Unconformity-type deposits make up about 33% of the World Outside Centrally Planned Economies Areas' (WOCA) uranium deposits. Hydrothermal uranium deposits encompass the vein-type uranium ores. Vein-type hydrothermal uranium deposits represent epigenetic concentrations of uranium minerals that typically fill breccias, fractures, and shear zones. Many studies have sought to identify

3186-1270: The Elkon mine at 71,300 tU, the Brazilian Itataia complex at 67,240 tU, the Marenica project at 62,856 tU, the Langer Heinrich Mine at 60,830 tU, the Dominion mine at 55,753 tU, the Inkai Uranium Project at 51,808 tU, the Kiggavik project at 51,574 tU, the Rössing mine at 50,657 tU, the Australian Yeleerie project at 44,077, and the Trekkopje mine at 42,243 tU. Many different types of uranium deposits have been discovered and mined. There are mainly three types of uranium deposits including unconformity-type deposits, namely paleoplacer deposits and sandstone-type, also known as roll front type deposits. Uranium deposits are classified into 15 categories according to their geological setting and

3304-657: The German government acknowledge the genocide and agreed to pay €1.1 billion over 30 years in community aid. During World War I, South African troops under General Louis Botha occupied the territory and deposed the German colonial administration. The end of the war and the Treaty of Versailles resulted in South West Africa remaining a possession of South Africa, at first as a League of Nations mandate , until 1990. The mandate system

3422-616: The Herero and the Namaqua took up arms against ruthless German settlers. In a calculated punitive action by the German settlers, government officials ordered the extinction of the natives in the OvaHerero and Namaqua genocide . In what has been called the "first genocide of the 20th century", the Germans systematically killed 10,000 Nama (half the population) and approximately 65,000 Herero (about 80% of

3540-1049: The Olympic Dam mine at 2981 tU, the Arlit mine at 1808 tU, the Rabbit Lake mine at 1400 tU, the Akouta mine at 1435 tU, and the McClean Lake mine at 1400 tU. The world's largest deposits include the Olympic Dam mine at 295,000 tU, the Imouraren mine at 183,520 tU, the McArthur River mine at 128,900 tU, the Streltsovsk mine at 118,341 tU, the Novokonstantinovka mines at 93,630, the Cigar Lake Mine at 80,500 tU, Uzbekistan mines at 76,000 tU,

3658-654: The Skeleton Coast to the northwest, the Namib Desert and its coastal plains to the southwest, the Orange River to the south, and the Kalahari Desert to the east. The Central Plateau is home to the highest point in Namibia at Königstein elevation 2,606 metres (8,550 ft). The Namib is a broad expanse of hyper-arid gravel plains and dunes that stretches along Namibia's entire coastline. It varies between 100 and 200 kilometres (60 and 120 mi) in width. Areas within

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3776-639: The South African Border War . However, Walvis Bay and the Penguin Islands remained under South African control until 1994. Namibia is a stable parliamentary democracy . Agriculture, tourism and the mining industry  – including mining for gem diamonds, uranium , gold , silver and base metals  – form the basis of its economy , while the manufacturing sector is comparatively small. Despite significant GDP growth since its independence, poverty and inequality remain significant in

3894-705: The Tripartite Accord , under pressure from both the Soviet Union and the United States. South Africa accepted Namibian independence in exchange for Cuban military withdrawal from the region and an Angolan commitment to cease all aid to PLAN. PLAN and South Africa adopted an informal ceasefire in August 1988, and a United Nations Transition Assistance Group (UNTAG) was formed to monitor the Namibian peace process and supervise

4012-722: The United Nations , the Southern African Development Community , the African Union and the Commonwealth of Nations . The name of the country is derived from the Namib desert, the oldest desert in the world. The word Namib itself is of Nama origin and means "vast place". The name was chosen by Mburumba Kerina , who originally proposed "Republic of Namib". Before Namibia became independent in 1990, its territory

4130-564: The first genocide of the 20th century. German rule ended during the First World War with a 1915 defeat by South African forces. In 1920, after the end of the war, the League of Nations mandated administration of the colony to South Africa. From 1948, with the National Party elected to power, this included South Africa applying apartheid to what was then known as South West Africa . In

4248-462: The oshanas ( Oshiwambo : flood plains) there. The worst floods so far occurred in March 2011 and displaced 21,000 people. Namibia is the driest country in sub-Saharan Africa and depends largely on groundwater. With an average rainfall of about 350 mm (14 in) per annum, the highest rainfall occurs in the Caprivi Strip in the northeast (about 600 mm (24 in) per annum) and decreases in

4366-468: The western US ), Precambrian unconformities (in Canada), phosphate , Precambrian quartz -pebble conglomerate , collapse breccia pipes (see Arizona breccia pipe uranium mineralization ), and calcrete . Sandstone uranium deposits are generally of two types. Roll-front type deposits occur at the boundary between the up dip and oxidized part of a sandstone body and the deeper down dip reduced part of

4484-400: The "cut and fill" or "open stoping" method, the space remaining following removal of ore after blasting is filled with waste rock and cement. In the "shrinkage" method, only sufficient broken ore is removed via the chutes below to allow miners working from the top of the pile to drill and blast the next layer to be broken off, eventually leaving a large hole. The method known as "room and pillar"

4602-563: The 14th century, immigrating Bantu peoples arrived as part of the Bantu expansion . From 1600 the Ovambo formed kingdoms, such as Ondonga and Oukwanyama . In 1884, the German Empire established rule over most of the territory, forming a colony known as German South West Africa . Between 1904 and 1908, German troops waged a punitive campaign against the Herero and Nama which escalated into

4720-655: The 1960s in the United Kingdom, France, Germany, and Japan, this research was halted due to low recovery efficiency. At the Takasaki Radiation Chemistry Research Establishment of the Japan Atomic Energy Research Institute (JAERI Takasaki Research Establishment), research and development has continued culminating in the production of adsorbent by irradiation of polymer fiber. Adsorbents have been synthesized that have

4838-501: The African continent. In December 2014, Prime Minister Hage Geingob , the candidate of ruling SWAPO, won the presidential elections , taking 87% of the vote. His predecessor, President Hifikepunye Pohamba , also of SWAPO, had served the maximum two terms allowed by the constitution. In December 2019, President Hage Geingob was re-elected for a second term, taking 56.3% of the vote. On 4 February 2024, President Hage Geingob died and he

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4956-471: The Atlantic Ocean, which accounts for very low precipitation (50 mm (2 in) per year or less), frequent dense fog, and overall lower temperatures than in the rest of the country. In Winter, occasionally a condition known as Bergwind (German for "mountain wind") or Oosweer ( Afrikaans for "east weather") occurs, a hot dry wind blowing from the inland to the coast. As the area behind

5074-450: The Caprivi Strip. Rainfall is highly variable, and droughts are common. In the summer of 2006/07 the rainfall was recorded far below the annual average. In May 2019, Namibia declared a state of emergency in response to the drought, and extended it by an additional 6 months in October 2019. Weather and climate in the coastal area are dominated by the cold, north-flowing Benguela Current of

5192-533: The GSC built a lighter weight, more practical unit in 1934. Subsequent models were the principal instruments used for uranium prospecting for many years, until geiger counters were replaced by scintillation counters . The use of airborne detectors to prospect for radioactive minerals was first proposed by G. C. Ridland, a geophysicist working at Port Radium in 1943. In 1947, the earliest recorded trial of airborne radiation detectors (ionization chambers and Geiger counters)

5310-458: The May, 2008 exchange rate, this was about $ 240/kg-U. In 2012, ORNL researchers announced the successful development of a new adsorbent material dubbed "HiCap", which vastly outperforms previous best adsorbents, which perform surface retention of solid or gas molecules, atoms or ions. "We have shown that our adsorbents can extract five to seven times more uranium at uptake rates seven times faster than

5428-567: The Namib include the Skeleton Coast and the Kaokoveld in the north and the extensive Namib Sand Sea along the central coast. The Great Escarpment swiftly rises to over 2,000 metres (7,000 ft). Average temperatures and temperature ranges increase further inland from the cold Atlantic waters, while the lingering coastal fogs slowly diminish. Although the area is rocky with poorly developed soils, it

5546-603: The Namibian government has promoted a policy of national reconciliation. It issued an amnesty for those who fought on either side during the liberation war. The civil war in Angola spilled over and adversely affected Namibians living in the north of the country. In 1998, Namibia Defence Force (NDF) troops were sent to the Democratic Republic of the Congo as part of a Southern African Development Community (SADC) contingent. In 1999,

5664-459: The Oorlam very well, granting them the right to use waterholes and grazing against an annual payment. On their way further north, however, the Oorlam encountered clans of the OvaHerero at Windhoek, Gobabis , and Okahandja , who resisted their encroachment. The Nama-Herero War broke out in 1880, with hostilities ebbing only after the German Empire deployed troops to the contested places and cemented

5782-548: The Portuguese did not try to claim the area. Like most of the interior of Sub-Saharan Africa , Namibia was not extensively explored by Europeans until the 19th century. At that time traders and settlers came principally from Germany and Sweden. In 1870, Finnish missionaries came to the northern part of Namibia to spread the Lutheran religion among the Ovambo and Kavango people . In the late 19th century, Dorsland Trekkers crossed

5900-469: The San people as hunter-gatherers . Around the 14th century, immigrating Bantu people began to arrive during the Bantu expansion from central Africa. From the late 18th century onward, Oorlam people from Cape Colony crossed the Orange River and moved into the area that today is southern Namibia. Their encounters with the nomadic Nama tribes were largely peaceful. They received the missionaries accompanying

6018-513: The Sengier reopened the Sinkolobwe mine with U.S. Army Corps of Engineers ' resources, and a $ 13 million investment from the United States. Sengier reported that uranium ore had been extracted from the mine down to a depth of 79 meters, but that another 101 meters of ore was available for extraction. This amounted to 10,000 tons of up to 60% triuranium octoxide . The project also acquired most of

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6136-654: The Shinkolobwe mine, but closed down in the late 1930s as the radium market diminished. In May 1940, the Nazis invaded Belgium and seized Union Minière's uranium ore stored there. On 18 September 1942, 1250 t of Shinkolobwe uranium ore for the Manhattan Project was purchased from Union Minière's Edgar Sengier , who had stockpiled the ore in an Archer Daniels Midland warehouse near the Bayonne Bridge , Staten Island . In 1943,

6254-764: The Soviet Republics of Kazakhstan and the RSFSR would later become some of the leading uranium producers in the world, immediately after the end of World War II the availability of large uranium deposits in the USSR wasn't yet known and thus the Soviets developed immense mining operations in their satellite states East Germany and Czechoslovakia which had known uranium deposits in the Ore Mountains. The deliberately opaquely named SDAG Wismut (the German term "Wismut" for Bismuth should give

6372-515: The UN General Assembly adopted a resolution proclaiming that, in accordance with the desires of its people, South West Africa be renamed Namibia . United Nations Security Council Resolution 269 , adopted in August 1969, declared South Africa's continued occupation of Namibia illegal. In recognition of this landmark decision, SWAPO's armed wing was renamed the People's Liberation Army of Namibia (PLAN). Namibia became one of several flashpoints for Cold War proxy conflicts in southern Africa during

6490-488: The UN General Assembly rejected this proposal, South Africa dismissed its opinion and began solidifying control of the territory. The UN General Assembly and Security Council responded by referring the issue to the International Court of Justice (ICJ), which held a number of discussions on the legality of South African rule between 1949 and 1966. South Africa began imposing apartheid , its codified system of racial segregation and discrimination, on South West Africa during

6608-423: The United States. A large mass of breccia is called a breccia pipe or chimney and is composed of the rock forming an irregular and almost cylinder-like shape. The origin of breccia pipe is uncertain but it is thought that they form on intersections and faults.  When the formations are found solid in ground host rock called rock flour, it usually is often a site for copper or uranium mining. Copper Creek, Arizona,

6726-399: The advances made in the efficiency of seawater uranium extraction, it was suggested that it would be economically competitive to produce fuel for light water reactors from seawater if the process was implemented at large scale. Uranium extracted on an industrial scale from seawater would constantly be replenished by both river erosion of rocks and the natural process of uranium dissolved from

6844-412: The air. In Australia, a Weathering Intensity Index has been developed to help prospectors based on the Shuttle Radar Topography Mission (SRTM) elevation and airborne gamma-ray spectrometry images. A deposit of uranium, discovered by geophysical techniques, is evaluated and sampled to determine the amounts of uranium materials that are extractable at specified costs from the deposit. Uranium reserves are

6962-436: The amounts of ore that are estimated to be recoverable at stated costs. As prices rise or technology allows for lower cost of recovery of known, previously uneconomic, deposits, reserves increase. For uranium this effect is particularly pronounced as the biggest currently uneconomic reserve – uranium extraction from seawater – is bigger than all known land based resources of uranium combined. From 2008 through at least 2024,

7080-447: The application. Enrichment requires conversion of the yellowcake into uranium hexafluoride and production of the fuel (again usually uranium dioxide, but sometimes uranium carbide , uranium hydride or uranium nitride ) from that feedstock. Before 1789, when Martin Heinrich Klaproth discovered the element, uranium compounds produced included nitrate, sulfate, phosphate, acetate and potassium- and sodium- diuranate . Klaproth detected

7198-497: The arduous task of rehabilitating the land impacted by mining was begun. The seventeen towns and mines under Wismut's control contributed 50 percent of the uranium used in the Soviet's first atomic bomb, Joe-1 , and 80 percent of the uranium used in the Soviet nuclear program. Of the 150,000 laborers, 1281 were killed in accidents and 20,000 suffered injuries. After Stalin's death in 1953, the Red Army turned over control of production to SDAG, and prison laborers were released, reducing

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7316-434: The area on their way from the Transvaal to Angola. Some of them settled in Namibia instead of continuing their journey. Namibia became a German colony in 1884 under Otto von Bismarck to forestall perceived British encroachment and was known as German South West Africa ( Deutsch-Südwestafrika ). The Palgrave Commission by the British governor in Cape Town determined that only the natural deep-water harbour of Walvis Bay

7434-502: The coast is a desert, these winds can develop into sand storms, leaving sand deposits in the Atlantic Ocean that are visible on satellite images. The Central Plateau and Kalahari areas have wide diurnal temperature ranges of up to 30C (54F). Efundja , the annual seasonal flooding of the northern parts of the country, often causes not only damage to infrastructure but loss of life. The rains that cause these floods originate in Angola, flow into Namibia's Cuvelai-Etosha Basin , and fill

7552-533: The country. More than 100,000 boreholes have been drilled in Namibia over the past century. One third of these boreholes have been drilled dry. An aquifer called Ohangwena II, on both sides of the Angola-Namibia border, was discovered in 2012. It has been estimated to be capable of supplying a population of 800,000 people in the North for 400 years, at the current (2018) rate of consumption. Experts estimate that Namibia has 7,720 km (1,850 cu mi) of underground water. According to African Folder,

7670-406: The country. 40.9% of the population is affected by multidimensional poverty , and more than 400,000 people continue to live in informal housing . Income disparity in the country is one of the world's highest with a Gini coefficient of 59.1 in 2015. With a population of 3,022,401 people today, Namibia is one of the most sparsely populated countries in the world. Namibia is a member state of

7788-421: The crosscut. To extract the ore, the next step is to drive tunnels, known as raises when driven upwards and winzes when driven downward, through the deposit from level to level. Raises are subsequently used to develop the stopes where the ore is mined from the veins. The stope, which is the workshop of the mine, is the excavation from which the ore is extracted. Three methods of stope mining are commonly used. In

7906-425: The disseminated uranium deposit at Rossing , Namibia; uranium-bearing pegmatites , and the Aurora crater lake deposit of the McDermitt Caldera in Oregon. Disseminated deposits are also found in the states of Washington and Alaska in the US. Breccia uranium deposits are found in rocks that have been broken due to tectonic fracturing, or weathering. Breccia uranium deposits are most common in India, Australia and

8024-439: The downfall of the Herero in Namibia was a model for the Nazis in the Holocaust . The memory of what happened under German rule has contributed to shape the ethnic identity in independent Namibia and has kept its significance in today's relations with Germany. The German minister for development aid apologised for the Namibian genocide in 2004. However, the German government distanced itself from this apology. Only in 2021 did

8142-404: The east and South Africa to the east and south. Although it does not border Zimbabwe , less than 200 metres (660 feet) of the Botswanan right bank of the Zambezi River separates the two countries. Its capital and largest city is Windhoek . The driest country in sub-Saharan Africa , Namibia has been inhabited since pre-historic times by the Khoi , San , Damara and Nama people . Around

8260-402: The element radium . Pierre advocated its usage as a cancer cure, which fostered a spa business for that town. In 1913, the Shinkolobwe , Katanga Province, was discovered. In 1931, the Port Radium deposit was discovered. Other significant discoveries included Beira Province , Tyuya Muyun , and Radium Hill . In 1922, Union Minière du Haut Katanga started producing medicinal radium from

8378-442: The element in pitchblende from the George Wagsfort mine, Ore Mountains , and established commercial use as glass coloring. Pitchblende from these mountains was mentioned as early as 1565, and 110 t of uranium was produced from 1825 until 1898. In 1852, the uranium mineral autunite from the Massif Central was identified. Around 1850, uranium mining began in Joachimsthal, Bohemia , where more than 620 t of uranium metal (tU)

8496-571: The first Southern African country and the eighth country in Africa to accede to the Convention on the Protection and Use of Transboundary Watercourses and International Lakes (UN Water Convention). Uranium mining Uranium is mined by in-situ leaching (57% of world production) or by conventional underground or open-pit mining of ores (43% of production). During in-situ mining, a leaching solution

8614-500: The geological process called weathering. Therefore, oxide ore deposits are typically found close to the surface. If there are no other economic elements within the ore a mine might choose to extract the uranium using a leaching agent, usually a low molar sulfuric acid. If the economic and geological conditions are right, the mining company will level large areas of land with a small gradient, layering it with thick plastic (usually HDPE or LLDPE ), sometimes with clay, silt or sand beneath

8732-533: The illusion of prospection for a metal the Soviets definitely weren't after) became the biggest employer in the Saxon Ore Mountains and remote mining towns like Johanngeorgenstadt swelled to ten times their population in a few years. The mining cost immense amounts of money and miners were on the one hand subject to heavier repression and surveillance but on the other hand allowed more generous supply with consumer goods than other East Germans. While production

8850-434: The last South African troops had been withdrawn from Namibia, all political prisoners granted amnesty, racially discriminatory legislation repealed, and 42,000 Namibian refugees returned to their homes. Just over 97% of eligible voters participated in the country's first parliamentary elections held under a universal franchise . The United Nations plan included oversight by foreign election observers in an effort to ensure

8968-537: The late 1940s. Black South West Africans were subject to pass laws , curfews, and a host of residential regulations that restricted their movement. Development was concentrated in the southern region of the territory adjacent to South Africa, known as the " Police Zone ", where most of the major settlements and commercial economic activity were located. Outside the Police Zone, indigenous peoples were restricted to theoretically self-governing tribal homelands . During

9086-603: The late 1950s and early 1960s, the accelerated decolonisation of Africa and mounting pressure on the remaining colonial powers to grant their colonies self-determination resulted in the formation of nascent nationalist parties in South West Africa. Movements such as the South West African National Union (SWANU) and the South West African People's Organisation (SWAPO) advocated for the formal termination of South Africa's mandate and independence for

9204-498: The later 20th century, uprisings and demands for political representation resulted in the United Nations assuming direct responsibility over the territory in 1966, but South Africa maintained de facto rule until 1973, when the UN recognised the South West Africa People's Organisation ( SWAPO ) as the official representative of the Namibian people. Namibia gained independence from South Africa on 21 March 1990, following

9322-508: The latter years of the PLAN insurgency. The insurgents sought out weapons and sent recruits to the Soviet Union for military training. As the PLAN war effort gained momentum, the Soviet Union and other sympathetic states such as Cuba continued to increase their support, deploying advisers to train the insurgents directly as well as supplying more weapons and ammunition. SWAPO's leadership, dependent on Soviet, Angolan, and Cuban military aid, positioned

9440-567: The least rainfall of any country in sub-Saharan Africa. The Namibian landscape consists generally of five geographical areas, each with characteristic abiotic conditions and vegetation, with some variation within and overlap between them: the Central Plateau, the Namib, the Great Escarpment , the Bushveld , and the Kalahari Desert. The Central Plateau runs from north to south, bordered by

9558-621: The mandate as a veiled annexation and made no attempt to prepare South West Africa for future autonomy. As a result of the Conference on International Organization in 1945, the League of Nations was formally superseded by the United Nations (UN) and former League mandates by a trusteeship system. Article 77 of the United Nations Charter stated that UN trusteeship "shall apply...to territories now held under mandate"; furthermore, it would "be

9676-567: The mine. In the past mining companies would sometimes go bankrupt, leaving the responsibility of mine reclamation to the public. 21st century additions to US mining law require that companies set aside the money for reclamation before the beginning of the project. The money will be held by the public to insure adherence to environmental standards if the company were to ever go bankrupt. In-situ leaching (ISL), also known as solution mining, or in-situ recovery (ISR) in North America, involves leaving

9794-423: The more efficient acid leach. The Australian government has published a best practice guide for in situ leach mining of uranium, which is being revised to take account of international differences. The uranium concentration in sea water is low, approximately 3.3 parts per billion or 3.3 micrograms per liter of seawater. But the quantity of this resource is gigantic and some scientists believe this resource

9912-518: The movement firmly within the socialist bloc by 1975. This practical alliance reinforced the external perception of SWAPO as a Soviet proxy, which dominated Cold War rhetoric in South Africa and the United States. For its part, the Soviet Union supported SWAPO partly because it viewed South Africa as a regional Western ally. Growing war weariness and the reduction of tensions between the superpowers compelled South Africa, Angola, and Cuba to accede to

10030-490: The national assembly). The country officially became independent on 21 March 1990. Sam Nujoma was sworn in as the first President of Namibia at a ceremony attended by Nelson Mandela of South Africa (who had been released from prison the previous month) and representatives from 147 countries, including 20 heads of state. In 1994, shortly before the first multiracial elections in South Africa, that country ceded Walvis Bay to Namibia. Since independence Namibia has completed

10148-505: The national government quashed a secessionist attempt in the northeastern Caprivi Strip . The Caprivi conflict was initiated by the Caprivi Liberation Army (CLA), a rebel group led by Mishake Muyongo . It wanted the Caprivi Strip to secede and form its own society. In 2007, Twyfelfontein was inscribed as a cultural UNESCO World Heritage Site , a prehistoric site with one of the largest concentrations of rock engravings on

10266-415: The native groundwater in the orebody which is fortified with a complexing agent and in most cases an oxidant. It is then pumped through the underground orebody to recover the minerals in it by leaching. Once the pregnant solution is returned to the surface, the uranium is recovered in much the same way as in any other uranium plant (mill). In Australian ISL mines ( Beverley , Four Mile and Honeymoon Mine )

10384-512: The now-exposed rocks acid mine drainage can be a concern for those newly developing bodies of water. Mining companies are now required by law to establish a fund for future reclamation while mining is ongoing and those funds are usually deposited in such a way as to be unaffected by bankruptcy of the mining company. If the uranium is too far below the surface for open pit mining, an underground mine might be used with tunnels and shafts dug to access and remove uranium ore. Underground uranium mining

10502-719: The only four countries that have reported non-domestic uranium exploration and development expenses are: China, Japan, France, and Russia. The U.S. is investigating whether China is circumventing a ban on Russian uranium imports by exporting its uranium to the U.S. while importing enriched uranium from Russia. This inquiry follows a spike in Chinese uranium exports to the U.S. after the December 2023 ban, which aimed to cut off funding for Russia's war in Ukraine. As with other types of hard rock mining there are several methods of extraction. In 2016,

10620-429: The ore where it is in the ground, and recovering the minerals from it by dissolving them and pumping the pregnant solution to the surface where the minerals can be recovered. Consequently, there is little surface disturbance and no tailings or waste rock generated. However, the orebody needs to be permeable to the liquids used, and located so that they do not contaminate ground water away from the orebody. Uranium ISL uses

10738-511: The oxidant used is hydrogen peroxide and the complexing agent sulfuric acid. Kazakh ISL mines generally do not employ an oxidant but use much higher acid concentrations in the circulating solutions. ISL mines in the USA use an alkali leach due to the presence of significant quantities of acid-consuming minerals such as gypsum and limestone in the host aquifers. Any more than a few percent carbonate minerals means that alkali leach must be used in preference to

10856-546: The percentage of the mined uranium produced by each mining method was: in-situ leach (49.7 percent), underground mining (30.8 percent), open pit (12.9 percent), heap leaching (0.4 percent), co-product/by-product (6.1%). The remaining 0.1% was derived as miscellaneous recovery. In open pit mining, overburden is removed by drilling and blasting to expose the ore body, which is then mined by blasting and excavation using loaders and dump trucks. Workers spend much time in enclosed cabins thus limiting exposure to radiation. Water

10974-458: The plastic liner. The extracted ore will typically be run through a crusher and placed in heaps atop the plastic. The leaching agent will then be sprayed on the ore for 30–90 days. As the leaching agent filters through the heap, the uranium will break its bonds with the oxide rock and enter the solution. The solution will then filter along the gradient into collecting pools which will then be pumped to on-site plants for further processing. Only some of

11092-651: The population of laborers to 45,000. At its peak in 1953, the St. Joachimsthal mines had 16,100 inmates, half of whom were Soviet political prisoners. By 1975, 75% of global uranium ore production came from quartz - pebble conglomerates and sandstones located in the Elliot Lake area of Canada , Witwatersrand , and the Colorado Plateau . In 1990, 55% of world production came from underground mines, but this shrank to 33% by 1999. From 2000, new Canadian mines again increased

11210-464: The population). The survivors, when finally released from detention, were subjected to a policy of dispossession, deportation, forced labour, racial segregation, and discrimination in a system that in many ways foreshadowed the apartheid established by South Africa in 1948. Most Africans were confined to so-called native territories, which under South African rule after 1949 were turned into "homelands" ( Bantustans ). Some historians have speculated that

11328-455: The presence of radioactive isotopes. The Geiger counter was the original radiation detector, recording the total count rate from all energy levels of radiation. Ionization chambers and Geiger counters were first adapted for field use in the 1930s. The first transportable Geiger–Müller counter (weighing 25 kg) was constructed at the University of British Columbia in 1932. H.V. Ellsworth of

11446-631: The production from the Eldorado Mine (Northwest Territories) . According to Richard Rhodes , referring to German uranium research, " Auer , the thorium specialists ... delivered the first ton of pure uranium oxide processed from Joachimsthal ores to the War Office in January 1940. In June 1940 ... Auer ordered sixty tons of refined uranium oxide from the Union Miniére in occupied Belgium." While

11564-706: The proportion of underground mining, and with Olympic Dam it is now 37%. In situ leach (ISL, or ISR) mining has been steadily increasing its share of the total, mainly due to Kazakhstan. In 2009, top producing mines included the McArthur River uranium mine at 7400 tU, the Ranger Uranium Mine at 4423 tU, the Rössing uranium mine at 3574 tU, the Moiynkum Desert mines at 3250 tU, the Streltsovsk mine at 3003 tU,

11682-412: The return of refugees. The ceasefire was broken after PLAN made a final incursion into the territory, possibly as a result of misunderstanding UNTAG's directives, in March 1989. A new ceasefire was later imposed with the condition that the insurgents were to be confined to their external bases in Angola until they could be disarmed and demobilised by UNTAG. By the end of the 11-month transition period,

11800-490: The source of uranium with hydrothermal vein-type deposits and the potential sources still remains a mystery, but are thought to include preexisting rocks that have been broken down by weathering and force that come from areas of long-term sediment build up. The South Chine Block is an example of a region that has been relying on vein-type hydrothermal uranium deposit demand for the past half century. Igneous deposits include nepheline syenite intrusives at Ilimaussaq , Greenland;

11918-555: The status quo among the Nama, Oorlam, and Herero. In 1878, the Cape of Good Hope , then a British colony, annexed the port of Walvis Bay and the offshore Penguin Islands ; these became an integral part of the new Union of South Africa at its creation in 1910. The first Europeans to disembark and explore the region were the Portuguese navigators Diogo Cão in 1485 and Bartolomeu Dias in 1486, but

12036-548: The striking workers would later join SWAPO's PLAN as part of the South African Border War. As SWAPO's insurgency intensified, South Africa's case for annexation in the international community continued to decline. The UN declared that South Africa had failed in its obligations to ensure the moral and material well-being of South West Africa's indigenous inhabitants, and had thus disavowed its own mandate. On 12 June 1968,

12154-404: The sulfuric acid. Heap leach is significantly cheaper than traditional milling processes. The low costs allow for lower grade ore to be economically feasible (given that it is the right type of ore body). US environmental law requires that the surrounding ground water is continually monitored for possible contamination. The mine will also have to have continued monitoring even after the shutdown of

12272-447: The territory. In 1966, following the ICJ's controversial ruling that it had no legal standing to consider the question of South African rule, SWAPO launched an armed insurgency that escalated into part of a wider regional conflict known as the South African Border War . In 1971 Namibian contract workers led a general strike against the contract system and in support of independence. Some of

12390-608: The transition from white minority apartheid rule to parliamentary democracy. Multiparty democracy was introduced and has been maintained, with local, regional and national elections held regularly. Several registered political parties are active and represented in the National Assembly, although the SWAPO has won every election since independence. The transition from the 15-year rule of President Nujoma to his successor Hifikepunye Pohamba in 2005 went smoothly. Since independence,

12508-526: The type of rock in which they are found. This geological classification system is determined by the International Atomic Energy Agency (IAEA). Uranium is also contained in seawater but at present prices on the uranium market , costs would have to be lowered by a factor of 3–6 to make its recovery economical. Uranium deposits in sedimentary rocks include those in sandstone (in Canada and

12626-415: The uranium (commonly about 70%) is actually extracted. The uranium concentrations within the solution are very important for the efficient separation of pure uranium from the acid. As different heaps will yield different concentrations, the solution is pumped to a mixing plant that is carefully monitored. The properly balanced solution is then pumped into a processing plant where the uranium is separated from

12744-454: The western escarpment ) to the Hyper-Arid coastal plain [less than 100 mm (4 in)]. Temperature maxima are limited by the overall elevation of the entire region: only in the far south, Warmbad for instance, are maxima above 40 °C (104 °F) recorded. Typically the sub-Tropical High Pressure Belt, with frequent clear skies, provides more than 300 days of sunshine per year. It

12862-406: The world's best adsorbents," said Chris Janke, one of the inventors and a member of ORNL's Materials Science and Technology Division. HiCap also effectively removes toxic metals from water, according to results verified by researchers at Pacific Northwest National Laboratory . In 2012 it was estimated that this fuel source could be extracted at 10 times the current price of uranium. In 2014, with

12980-573: The world. Because of the location of the shoreline, at the point where the Atlantic's cold water reaches Africa's hot climate, often extremely dense fog forms along the coast. Near the coast there are areas where the dune-hummocks are vegetated. Namibia has rich coastal and marine resources that remain largely unexplored. The Caprivi Strip extends east from the northeastern corner of the country. Namibia has 13 cities, governed by municipalities and 26 towns, governed by town councils. The capital Windhoek

13098-399: Was >1 kg of yellowcake after 240 days of submersion in the ocean. The experiment by Seko et al. was repeated by Tamada et al. in 2006. They found that the cost varied from ¥15,000 to ¥88,000 depending on assumptions and "The lowest cost attainable now is ¥25,000 with 4g-U/kg-adsorbent used in the sea area of Okinawa, with 18 repetitionuses [ sic ]." With

13216-448: Was conducted by Eldorado Mining and Refining Limited . (a Canadian Crown Corporation since sold to become Cameco Corporation ). The first patent for a portable gamma-ray spectrometer was filed by Professors Pringle, Roulston & Brownell of the University of Manitoba in 1949, the same year as they tested the first portable scintillation counter on the ground and in the air in northern Saskatchewan . Airborne gamma-ray spectrometry

13334-492: Was formed as a compromise between those who advocated for an Allied annexation of former German and Ottoman territories and a proposition put forward by those who wished to grant them to an international trusteeship until they could govern themselves. It permitted the South African government to administer South West Africa until that territory's inhabitants were prepared for political self-determination. South Africa interpreted

13452-454: Was immediately succeeded by vice-president Nangolo Mbumba as new President of Namibia. At 825,615 km (318,772 sq mi), Namibia is the world's thirty-fourth largest country (after Venezuela). It lies mostly between latitudes 17° and 29°S (a small area is north of 17°), and longitudes 11° and 26°E . Being situated between the Namib and the Kalahari deserts, Namibia has

13570-565: Was known first as German South-West Africa ( Deutsch-Südwestafrika ), and then as South West Africa , reflecting its colonial occupation by Germans and South Africans, respectively. The dry lands of Namibia have been inhabited since prehistoric times by the San , Damara , and Nama . For thousands of years, the Khoisan peoples of Southern Africa maintained a nomadic life, the Khoikhoi as pastoralists and

13688-468: Was never able to compete with global uranium market prices, the dual use nature of the mined material as well as the possibility to pay miners in soft currency but sell uranium for hard currency or substitute imports which would have had to be paid for in hard currency tipped the scales in favor of continuing mining operations throughout the Cold War. After German reunification , mining was wound down and

13806-743: Was produced from 1850 and 1898, with 10,000 tU produced before closure in 1968. In 1871, uranium ore mining began in Central City, Colorado , where 50 t were mined before 1895. In 1873, the uranium mining began in the South Terras mine, St Stephen-in-Brannel , Cornwall, producing most of the 300 tU from that area in the 19th century. In 1898, carnotite was first mined in the Uravan Mineral Belt , yielding 10 tU annually. In 1898, Pierre Curie and Marie Skłodowska-Curie took delivery of 1 t of pitchblende from St. Joachimsthal, from which Marie identified

13924-510: Was worth occupying and thus annexed it to the Cape province of British South Africa. In 1897, a rinderpest epidemic caused massive cattle die-offs of an estimated 95% of cattle in southern and central Namibia. In response the German colonisers set up a veterinary cordon fence known as the Red Line . In 1907 this fence then broadly defined the boundaries for the first Police Zone. From 1904 to 1907,

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