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Nabarlek Uranium Mine
The Nabarlek Mine is a uranium mine in the Northern Territory of Australia which was productively worked only in 1979. The deposit sits within the Alligator Rivers Uranium Field approximately northeast of Jabiru. It was discovered by Queensland Mines Limited in 1970 by following up an intense airborne radiometric anomaly. History Discovery and financial implications Prospecting rights over the future mine were first obtained by Gwendolyne Stevens, a South Australian nurse and sheep farmer who had developed an interest in geology. She obtained rights over of the Oenpelli Aboriginal reserve and named the area " nabarlek" after a local marsupial species. She negotiated an exploration program with Queensland Mines Limited, a subsidiary of Kathleen Investments Limited which owned the Mary Kathleen uranium mine in Queensland. Both companies were publicly listed, although Kathleen Investments was majority-owned by the Rio Tinto Zinc Corporation (RTZ). In early 1970, Queensland ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arnhem Land
Arnhem Land is a historical region of the Northern Territory of Australia. It is located in the north-eastern corner of the territory and is around from the territorial capital, Darwin, Northern Territory, Darwin. In 1623, Dutch East India Company captain Voyage of the Pera and Arnhem to Australia in 1623, Willem Joosten van Colster (or Coolsteerdt) sailed into the Gulf of Carpentaria and Cape Arnhem is named after his ship, the ''Arnhem'', which itself was named after the city of Arnhem in the Netherlands. The area covers about and has an estimated population of 16,000, of whom 12,000 are Aboriginal and Torres Strait Islander people. Two regions are often distinguished as East Arnhem (Land) and West Arnhem (Land). The region's service hub is Nhulunbuy, east of Darwin, set up in the early 1970s as a mining town for bauxite. Other major population centres are Yirrkala (just outside Nhulunbuy), Gunbalanya (formerly Oenpelli), Ramingining, and Maningrida. A substantial proportio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Costean
Costeaning is the process by which miners seek to discover metallic lodes. It consists in sinking small pits through the superficial deposits to the solid rock, and then driving from one pit to another across the direction of the vein, in such manner as to cross all the veins between the two pits. In the Northern Territory of Australia Australia, officially the Commonwealth of Australia, is a country comprising mainland Australia, the mainland of the Australia (continent), Australian continent, the island of Tasmania and list of islands of Australia, numerous smaller isl ..., costeans are required to be excavated in a way which reduces disturbance to the environment.https://nt.gov.au/__data/assets/pdf_file/0013/203332/aa7-006-construction-and-rehabilitation-of-costeans-and-bulk-sample-pits-advisory-note.pdf References Surface mining {{Mining-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Uranium Ore Deposits
Uranium ore deposits are economically recoverable concentrations of uranium within Earth's crust. Uranium is one of the most common elements in Earth's crust, being 40 times more common than silver and 500 times more common than gold. It can be found almost everywhere in rock, soil, rivers, and oceans. The challenge for commercial uranium extraction is to find those areas where the concentrations are adequate to form an economically viable deposit. The primary use for uranium obtained from mining is in fuel for nuclear reactors. Globally, the distribution of uranium ore deposits is widespread on all continents, with the largest deposits found in Australia, Kazakhstan, and Canada. To date, high-grade deposits are only found in the Athabasca Basin region of Canada. Uranium deposits are generally classified based on host rocks, structural setting, and mineralogy of the deposit. The most widely used classification scheme was developed by the International Atomic Energy Agency and su ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Uranium Mining In Australia
Radioactive ores were first extracted in South Australia at Radium Hill in 1906 and Mount Gee#History, Mount Painter in 1911. 2,000 tons of ore were treated to recover radium for medical use. Several hundred kilograms of uranium were also produced for use in ceramic glazes. In 2019 Australia exported of uranium, 12% of world production, for use in nuclear power generation. IAEA and the OECD's NEA reported that the price of uranium in 2019 was $130/kg, and estimated that 35% of the world's uranium Mineral resource classification#Mineral resources, resource reserves was in Australia (1,748,100 tonnes out of 4,971,400 tonnes). In terms of production, Kazakhstan is the largest supplier, followed by Canada and Australia. Following the Japanese Fukushima nuclear disaster in early 2011, many countries scaled back their nuclear power production, with some setting deadlines for a complete shutdown of all nuclear power reactors, with a resultant impact on demand for uranium. As of 2013 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Triuranium Octoxide
Triuranium octoxide (U3O8) is a compound of uranium. It is present as an olive green to black, odorless solid. It is one of the more popular forms of yellowcake and is shipped between mills and refineries in this form. U3O8 has potential long-term stability in a geologic environment. In the presence of oxygen (O2), uranium dioxide (UO2) is oxidized to U3O8, whereas uranium trioxide (UO3) loses oxygen at temperatures above 500 °C and is reduced to U3O8. The compound can be produced by the calcination of ammonium diuranate or ammonium uranyl carbonate. Due to its high stability, it can be used for the disposal of depleted uranium.United States Nuclear Regulatory Commission, "Frequently Asked Questions about Depleted Uranium Deconversion Facilities", https://www.nrc.gov/materials/fuel-cycle-fac/ur-deconversion/faq-depleted-ur-decon.html Its particle density is 8.38 g cm−3. Triuranium octoxide is converted to uranium hexafluoride for the purpose of uranium enrichment. Form ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Open Cut Mining
Open-pit mining, also known as open-cast or open-cut mining and in larger contexts mega-mining, is a surface mining technique that extracts rock or minerals from the earth. Open-pit mines are used when deposits of commercially useful ore or rocks are found near the surface where the overburden is relatively thin. In contrast, deeper mineral deposits can be reached using underground mining. Open-pit mining is considered one of the most dangerous sectors in the industrial world. It causes significant effects to miners' health, as well as damage to the ecological land and water. Open-pit mining causes changes to vegetation, soil, and bedrock, which ultimately contributes to changes in surface hydrology, groundwater levels, and flow paths. Additionally, open-pit produces harmful pollutants depending on the type of mineral being mined, and the type of mining process being used. Extraction Miners typically drill a series of test holes to locate an underground ore body. From the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Traditional Owners
Native title is the set of rights, recognised by Australian law, held by Aboriginal and Torres Strait Islander groups or individuals to land that derive from their maintenance of their traditional laws and customs. These Aboriginal title rights were first recognised as a part of Australian common law with the decision of '' Mabo v Queensland (No 2)'' in 1992. The doctrine was subsequently implemented and modified via statute with the '' Native Title Act 1993''. The concept recognises that in certain cases there was and is a continued beneficial legal interest in land held by Indigenous peoples which survived the acquisition of radical title and sovereignty to the land by the Crown. Native title can co-exist with non-Aboriginal proprietary rights and in some cases different Aboriginal groups can exercise their native title rights over the same land. The Federal Court of Australia arranges mediation in relation to claims made by Aboriginal and Torres Strait Islander peoples, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oecophylla Smaragdina
''Oecophylla smaragdina'' (common names include Asian weaver ant, weaver ant, green ant, green tree ant, and orange gaster) is a species of tree, arboreal ant found in tropical Asia and Australia. These ants form colonies with multiple nests in trees, each nest being made of leaves stitched together using the silk produced by the ant larvae: hence the name 'oecophylla' [Greek for 'leaf-house']. Description Workers and major workers are mostly coloured orange. Workers are long; they look after larvae and farm scale bugs for Honeydew (secretion), honeydew. Major workers are long, with long strong legs and large mandibles. They forage, assemble and expand the nest. Queens are typically long, and normally greenish-brown, giving the species its name ''smaragdina'' (Latin: emerald (colour), emerald). Distribution and habitat ''Oecophylla smaragdina'' has a widespread distribution in tropical Asia and Australia, its range extending from India through Indonesia and the Philippines t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dreamtime
The Dreaming, also referred to as Dreamtime, is a term devised by early anthropologists to refer to a religio-cultural worldview attributed to Australian Aboriginal religion and mythology, Australian Aboriginal mythology. It was originally used by Francis James Gillen, Francis Gillen, quickly adopted by his colleague Walter Baldwin Spencer, and thereafter popularised by A. P. Elkin, who later revised his views. The Dreaming is used to represent Aboriginal concepts of "Everywhen", during which the land was inhabited by ancestral figures, often of heroic proportions or with supernatural abilities. The term is based on a rendition of the Arandic languages, Arandic word , used by the Aranda people, Aranda (Arunta, Arrernte) people of Central Australia, although it has been argued that it is based on a misunderstanding or mistranslation. Some scholars suggest that the word's meaning is closer to "Eternity, eternal, uncreated". Anthropologist William Edward Hanley Stanner, William ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Australian Aboriginal Sacred Site
An Australian Aboriginal sacred site is a place deemed significant and meaningful by Aboriginal Australians based on their beliefs. It may include any feature in the landscape, and in coastal areas, these may lie underwater. The site's status is derived from an association with some aspect of social and cultural tradition, which is related to ancestral beings, collectively known as Dreamtime (or the Dreaming/s), who created both physical and social aspects of the world. The site may have its access restricted based on gender, clan or other Aboriginal grouping, or other factors. The sites are protected by various state- and territory-based legislation as part of Australian heritage laws, and the federal ''Aboriginal and Torres Strait Islander Heritage Protection Act 1984'' can be invoked as a "last resort" if the site is not considered adequately covered by legislation in the jurisdiction. The legislation also protects sites of archaeological, historical and cultural signific ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Poseidon Bubble
The Poseidon bubble was a stock market bubble in which the price of Australian mining shares soared in late 1969, then crashed in early 1970. It was triggered by the discovery by Poseidon NL of the early indications of a promising nickel deposit in September 1969. In the late 1960s, nickel was in high demand due to the Vietnam War, but there was a shortage of supply due to industrial action against the major Canadian supplier Inco. These factors pushed the price of nickel to record levels, peaking at around £7,000/ton (£113,000 in 2018 adjusted for inflation) on the London market early in November 1969. In September 1969, the mineral exploration company Poseidon NL made a major nickel discovery at Mount Windarra northwest of Laverton, Western Australia. In early September its shares, which had been trading at $0.80, began rising on insider trading (which was not illegal at the time). On 1 October, Poseidon announced that drilling had struck 40 metres of ore averaging ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trevor Sykes
Trevor William Sykes (born 14 September 1937) is an Australian finance journalist who until his retirement in 2005 wrote the Pierpont column in the Australian Financial Review The ''Australian Financial Review'' (''AFR'') is an Australian compact daily newspaper with a focus on business, politics and economic affairs. The newspaper is based in Sydney, New South Wales, and has been published continuously since its foun .... He also wrote a number of books on prominent Australian corporate collapses and goings on. Bibliography * * References External links Pierpont web site collecting various articles etc. written by Sykes under that alter-ego 1937 births Australian columnists Living people Place of birth missing (living people) {{australia-writer-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
