Choiseul mine
The Choiseul mine is a large mine in the north of Solomon Islands in Choiseul Province. Choiseul represents one of the largest nickel reserve in Solomon Islands having estimated reserves of 63.5 million tonnes of ore grading 0.7% nickel. The 62.5 million tonnes of ore contains 440,000 tonnes of nickel metal.
Lake Maitland mine
The Lake Maitland mine is a large mine located in the western part of Australia in Western Australia. Lake Maitland represents one of the largest uranium reserves in Australia having estimated reserves of 28.7 million tonnes of ore grading 0.0029% uranium.
Kodal mine
The Kodal mine is one of the largest titanium mines in Norway. The mine is located in Vestfold. The mine has reserves amounting to 70 million tonnes of ore grading 8% titanium.
Uranium
In 1972, the French physicist Francis Perrin discovered fifteen ancient and no longer active natural nuclear fission reactors in three separate ore deposits at the Oklo mine in Gabon, West Africa, collectively known as the Oklo Fossil Reactors. The ore deposit is 1.7 billion years old; then, uranium-235 constituted about 3% of the total uranium on Earth. This is high enough to permit a sustained nuclear fission chain reaction to occur, provided other supporting conditions exist. The capacity of the surrounding sediment to contain the nuclear waste products has been cited by the U.S. federal government as supporting evidence for the feasibility to store spent nuclear fuel at the Yucca Mountain nuclear waste repository.
Uranium
Uranium is a naturally occurring element that can be found in low levels within all rock, soil, and water. Uranium is the 51st element in order of abundance in the Earth's crust. Uranium is also the highest-numbered element to be found naturally in significant quantities on Earth and is almost always found combined with other elements. Along with all elements having atomic weights higher than that of iron, it is only naturally formed in supernovae. The decay of uranium, thorium, and potassium-40 in the Earth's mantle is thought to be the main source of heat that keeps the outer core liquid and drives mantle convection, which in turn drives plate tectonics.
Uranium
A person can be exposed to uranium (or its radioactive daughters, such as radon) by inhaling dust in air or by ingesting contaminated water and food. The amount of uranium in air is usually very small; however, people who work in factories that process phosphate fertilizers, live near government facilities that made or tested nuclear weapons, live or work near a modern battlefield where depleted uranium weapons have been used, or live or work near a coal-fired power plant, facilities that mine or process uranium ore, or enrich uranium for reactor fuel, may have increased exposure to uranium. Houses or structures that are over uranium deposits (either natural or man-made slag deposits) may have an increased incidence of exposure to radon gas. The Occupational Safety and Health Administration (OSHA) has set the permissible exposure limit for uranium exposure in the workplace as 0.25 mg/m3 over an 8-hour workday. The National Institute for Occupational Safety and Health (NIOSH) has set a recommended exposure limit (REL) of 0.2 mg/m3 over an 8-hour workday and a short-term limit of 0.6 mg/m3. At levels of 10 mg/m3, uranium is immediately dangerous to life and health.
Bernic Lake mine
The Bernic Lake mine (or Tanco mine) is a large mine located in the central part of Canada in Manitoba. Bernic Lake represents one of the largest tantalum reserves in Canada having estimated reserves of 2.1 million tonnes of ore grading 0.22% tantalum. The mine also has additional reserves amounting to 7.3 million tonnes of ore grading 2.76% lithium.
Uranium
The use of uranium in its natural oxide form dates back to at least the year 79 CE, when it was used to add a yellow color to ceramic glazes. Yellow glass with 1% uranium oxide was found in a Roman villa on Cape Posillipo in the Bay of Naples, Italy, by R. T. Gunther of the University of Oxford in 1912. Starting in the late Middle Ages, pitchblende was extracted from the Habsburg silver mines in Joachimsthal, Bohemia (now Jáchymov in the Czech Republic), and was used as a coloring agent in the local glassmaking industry. In the early 19th century, the world's only known sources of uranium ore were these mines.
Operation Hurricane (Canada)
In 2005, military personnel also conducted a patrol, during which they raised a Canadian flag on Hans Island – a small, barren island in the Nares Strait, between northern Ellesmere Island and Greenland. Denmark currently disputes Canada's claim to this territory.
Gusevogoroskoye mine
The Gusevogoroskoye mine is a large iron mine located in western Russia in the Sverdlovsk Oblast. Gusevogoroskoye represents one of the largest iron ore reserves in Russia and in the world having estimated reserves of 2.82 billion tonnes of ore grading 15.7% iron metal.
Moab Khotsong mine
The Moab Khotsong mine is a large mine located in the northern part of South Africa in North West some 180 kilometers southwest of Johannesburg, South Africa. Moab Khotsong represents one of the largest uranium reserves in South Africa having estimated reserves of 57.2 million tonnes of ore grading 0.058% uranium.
Uranium
In nature, uranium is found as uranium-238 (99.2742%) and uranium-235 (0.7204%). Isotope separation concentrates (enriches) the fissionable uranium-235 for nuclear weapons and most nuclear power plants, except for gas cooled reactors and pressurised heavy water reactors. Most neutrons released by a fissioning atom of uranium-235 must impact other uranium-235 atoms to sustain the nuclear chain reaction. The concentration and amount of uranium-235 needed to achieve this is called a 'critical mass'.
Kharasan mine
The Kharasan mine is a large in-situ leaching mine located in the southern part of Kazakhstan in South Kazakhstan Region. Kharasan represents one of the largest uranium reserves in Kazakhstan having estimated reserves of 59.3 million tonnes of ore grading 0.074% uranium.
Musan mine
The Musan mine is a large iron mine located in north-east North Korea in North Hamgyong Province. Musan represents one of the largest iron ore reserves in North Korea and in the world having estimated reserves of 3 billion tonnes of ore grading 41% iron metal.
Chara mine
The Chara mine is a large iron mine located in southern Russia in the Zabaykalsky Krai. Chara represents one of the largest iron ore reserves in Russia and in the world having estimated reserves of 8 billion tonnes of ore grading 30% iron metal.
Yuanjiachun mine
The Yuanjiachun mine is a large iron mine located in northern China. Yuanjiachun represents one of the largest iron ore reserves in China and in the world having estimated reserves of 895 million tonnes of ore grading 32.7% iron metal.
Agbaja mine
The Agbaja mine is a large iron mine located in central Nigeria in the Kogi State. Agbaja represents one of the largest iron ore reserves in Nigeria and in the world having estimated reserves of 1.25 billion tonnes of ore grading 48% iron metal.
Uranium
Uranium ore is mined in several ways: by open pit, underground, in-situ leaching, and borehole mining (see uranium mining). Low-grade uranium ore mined typically contains 0.01 to 0.25% uranium oxides. Extensive measures must be employed to extract the metal from its ore. High-grade ores found in Athabasca Basin deposits in Saskatchewan, Canada can contain up to 23% uranium oxides on average. Uranium ore is crushed and rendered into a fine powder and then leached with either an acid or alkali. The leachate is subjected to one of several sequences of precipitation, solvent extraction, and ion exchange. The resulting mixture, called yellowcake, contains at least 75% uranium oxides U3O8. Yellowcake is then calcined to remove impurities from the milling process before refining and conversion.
Geological history of Earth
In contrast to the Proterozoic, Archean rocks are often heavily metamorphized deep-water sediments, such as graywackes, mudstones, volcanic sediments and banded iron formations. Greenstone belts are typical Archean formations, consisting of alternating high- and low-grade metamorphic rocks. The high-grade rocks were derived from volcanic island arcs, while the low-grade metamorphic rocks represent deep-sea sediments eroded from the neighboring island frogs and deposited in a forearc basin. In short, greenstone belts represent sutured protocontinents.
Hans Island
``Google fight ''or`` Google war'' is the name given to a number of advertisements on the Internet search engine Google which promoted either Danish or Canadian sovereignty over Hans Island.
In what body of water can you find the island that Denmark fights over with the country where high-grade uranium ores are notably found?
In what country are high-grade uranium ores notably found?
Canada
the island that #1 and denmark fight over
Hans Island
#2 >> located in or next to body of water
Nares Strait