|
Quirke Lake
Quirke Lake is body of water located in Ontario, Canada. It is located in the Quirke Lake basin, a geological basin the northern part of the Huronian Supergroup. The lake is proximate to five decommissioned uranium mines. Location The lake is located in the Quirke Lake basin (also known as the Quirke Lake trough), a geological basin or trough in the northern part of the Huronian Supergroup. The area around the lake is dominated by ridges and valleys. Water flows into the lake from the Serpent River after exiting Dunlop Lake before flowing into Whiskey Lake. The lake is within the Serpent River watershed. Human use The Quirke, Denison, Spanish-American, Can-Met, and Stanrock uranium mines were located in close proximity to the edge of the lake's shore. Historically, mine water was discharged into Quirke Lake from the mines. Author Vincent Courtenay, who worked in the mines in 1957 spoke about how the mining companies dumped tailings and chemicals into the lake. A late 19 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Quirke Lake (7140012071)
Quirke Lake is body of water located in Ontario, Canada. It is located in the Quirke Lake basin, a geological basin the northern part of the Huronian Supergroup. The lake is proximate to five decommissioned uranium mines. Location The lake is located in the Quirke Lake basin (also known as the Quirke Lake trough), a geological basin or trough in the northern part of the Huronian Supergroup. The area around the lake is dominated by ridges and valleys. Water flows into the lake from the Serpent River after exiting Dunlop Lake before flowing into Whiskey Lake. The lake is within the Serpent River watershed. Human use The Quirke, Denison, Spanish-American, Can-Met, and Stanrock uranium mines were located in close proximity to the edge of the lake's shore. Historically, mine water was discharged into Quirke Lake from the mines. Author Vincent Courtenay, who worked in the mines in 1957 spoke about how the mining companies dumped tailings and chemicals into the lake. A late 199 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Radium-226
Radium (88Ra) has no stable or nearly stable isotopes, and thus a standard atomic weight cannot be given. The longest lived, and most common, isotope of radium is 226Ra with a half-life of . 226Ra occurs in the decay chain of 238U (often referred to as the radium series). Radium has 33 known isotopes from 202Ra to 234Ra. In 2013 it was discovered that the nucleus of radium-224 is pear-shaped. This was the first discovery of an asymmetric nucleus. List of isotopes , - , 202Ra , , style="text-align:right" , 88 , style="text-align:right" , 114 , 202.00989(7) , 2.6(21) ms .7(+33−3) ms, , , 0+ , , - , rowspan=2, 203Ra , rowspan=2, , rowspan=2 style="text-align:right" , 88 , rowspan=2 style="text-align:right" , 115 , rowspan=2, 203.00927(9) , rowspan=2, 4(3) ms , α , 199Rn , rowspan=2, (3/2−) , rowspan=2, , - , β+ (rare) , 203Fr , - , rowspan=2 style="text-indent:1em" , 203mRa , rowspan=2, , rowspan=2 colspan="3" style="text-i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Uranium Mining And The Navajo People
In the 1950s, the Navajo Nation was situated directly in the uranium mining belt that experienced a boom in production, and many residents found work in the mines. Prior to 1962, the risks of lung cancer due to uranium mining were unknown to the workers, and the lack of a word for radiation in the Navajo language left the miners unaware of the Health effects of radiation, associated health hazards. The cultural significance of water for the Navajo people and the environmental damage to both the land and livestock inhibits the ability of the Navajo people to practice their culture. The Navajo Nation was affected by the United States' largest radioactive accident during the Church Rock uranium mill spill in 1979 when a tailings pond upstream from Navajo County breached its dam and sent radioactive waste down the Puerco River, injuring people and killing livestock.Pasternak, ''Yellow Dirt: An American Story of a Poisoned Land and a People Betrayed'', Free Press, 2010, p. 149, In the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nuclear Labor Issues
Nuclear labor issues exist within the international nuclear power industry and the nuclear weapons production sector worldwide, impacting upon the lives and health of laborers, itinerant workers and their families. A subculture of frequently undocumented workers do the dirty, difficult, and potentially dangerous work shunned by regular employees. They are called in the vernacular Nuclear Nomads, Bio-Robots, Luminizers, Glow Boys, Radium Girls, the Fukushima 50, Liquidators, Atomic Gypsies, Gamma Sponges, Nuclear Gypsies, Genpatsu Gypsies, Nuclear Samurai and Jumpers. When they exceed their allowable radiation exposure limit at a specific facility, they often migrate to a different nuclear facility. The industry implicitly accepts this conduct as it can not operate without these practices. The World Nuclear Association states that the transient workforce of "nuclear gypsies" – casual workers employed by subcontractors – has been "part of the nuclear scene for at least fou ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Uranium Mining In The Elliot Lake Area
Uranium mining in the Elliot Lake area (prior to 1955, more commonly known as the Blind River area) represents one of two major uranium-producing areas in Ontario, and one of seven in Canada. In the mid-1950s, the influx of people to Elliot Lake seeking uranium was described by engineer A. S. Bayne in a 1977 report as the "greatest uranium prospecting rush in the world". Mining activities peaked around 1959 and 1960 to respond to a US military needs for uranium during the Cold War. By 1958, Canada had become one of the world's leading producers of uranium and the $274 million of uranium exports that year represented Canada's most significant mineral export. By 1963, the federal government had purchased more than $1.5 billion of uranium from Canadian producers for export. The opening the mines and the workers they attracted led to the creation of Elliot Lake planned town. US demand slumped in the early 1960s, but the increasing use of nuclear power for electricity-generation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sievert
The sievert (symbol: SvNot be confused with the sverdrup or the svedberg, two non-SI units that sometimes use the same symbol.) is a unit in the International System of Units (SI) intended to represent the stochastic health risk of ionizing radiation, which is defined as the probability of causing radiation-induced cancer and genetic damage. The sievert is important in dosimetry and radiation protection. It is named after Rolf Maximilian Sievert, a Swedish medical physicist renowned for work on radiation dose measurement and research into the biological effects of radiation. The sievert is used for radiation dose quantities such as equivalent dose and effective dose (radiation), effective dose, which represent the risk of external radiation from sources outside the body, and committed dose, which represents the risk of internal irradiation due to inhaled or ingested radioactive substances. According to the International Commission on Radiological Protection (ICRP) one sievert r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Denison Mines
Denison Mines Corp. is a Canadian uranium exploration, development, and production company. Founded by Stephen B. Roman, and best known for its uranium mining in Blind River and Elliot Lake, it later diversified into coal, potash, and other projects. History About 1,000 workers at Denison's Elliot Lake mines went on strike in 1974, protesting unhealthy working conditions. The protest led to immediate improvements in safety conditions, and prompted Bill Davis to commission James Milton Ham to lead the Royal Commission on the Health and Safety of Workers in Mines. Denison served as manager for Uranium Participation Corporation, a Toronto-based investment fund which holds no license to deal in uranium until 2021 before it was sold to Sprott Asset Management and WMC Energy. Ownership and leadership 15% of the company is owned by Korea Electric Power Corporation (KEPCO). The CEO is David D. Cates, and Ron F. Hochstein is the chair of the board. Operations Denison's prin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Canadian Nuclear Safety Commission
The Canadian Nuclear Safety Commission (CNSC; french: Commission Canadienne de sûreté nucléaire) is the federal regulator of nuclear power and materials in Canada. Mandate and history Canadian Nuclear Safety Commission was established under the 1997 ''Nuclear Safety and Control Act'' with a mandate to regulate nuclear energy, nuclear substances, and relevant equipment in order to reduce and manage the safety, environmental, and national security risks, and to keep Canada in compliance with international legal obligations, such as the Treaty on the Non-Proliferation of Nuclear Weapons. It replaced the former Atomic Energy Control Board (AECB, French: ''Régie de energie atomique''), which was founded in 1946. The CNSC is an agency of the Government of Canada which reports to the Parliament of Canada through the Minister of Natural Resources. In 2008, Linda Keen the president and the chief executive officer of the CNSC was fired following a shortage of medical radioisotopes in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ministry Of Northern Development, Mines, Natural Resources And Forestry
The Northern Development, Mines, Natural Resources and Forestry is a government ministry of the Canadian province of Ontario that is responsible for Ontario's provincial parks, forests, fisheries, wildlife, mineral aggregates and the Crown lands and waters that make up 87 per cent of the province. Its offices are divided into Northwestern, Northeastern and Southern Ontario regions with the main headquarters in Peterborough, Ontario. The current minister is Greg Rickford. In 2021, the Ministry of Natural Resources and Forestry again merged with the Ministry of Energy, Northern Development and Mines to form the Ministry of Northern Development, Mines, Natural Resources and Forestry, while the Ministry of Energy became a separate ministry. History The first government office charge with responsibility of crown land management in modern-day Ontario was the Office of the Surveyor-General of the Northern District of North America, created in 1763 and initially headed by Samuel Hollan ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Extirpation
Local extinction, also known as extirpation, refers to a species (or other taxon) of plant or animal that ceases to exist in a chosen geographic area of study, though it still exists elsewhere. Local extinctions are contrasted with global extinctions. Local extinctions mark a change in the ecology of an area. In recent times, local extinction has sometimes been followed by a replacement of the species taken from other locations; wolf reintroduction is an example of this. The term "local extinction" is highly vernacular. The more proper biological term is ''extirpation''. Discussion Glaciation can lead to local extinction. This was the case during the Pleistocene glaciation event in North America. During this period, most of the native North American species of earthworm were killed in places covered by glaciation. This left them open for colonization by European earthworms brought over in soil from Europe. Species naturally become extirpated from islands over time. The number ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 overlies an ore or mineral body and is displaced during mining without being processed. The extraction of minerals from ore can be done two ways: placer mining, which uses water and gravity to concentrate the valuable minerals, or hard rock mining, which pulverizes the rock containing the ore and then relies on chemical reactions to concentrate the sought-after material. In the latter, the extraction of minerals from ore requires comminution, i.e., grinding the ore into fine particles to facilitate extraction of the target element(s). Because of this comminution, tailings consist of a slurry of fine particles, ranging from the size of a grain of sand to a few micrometres. Mine tailings are usually produced from the mill in slurry form, which i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ontario
Ontario ( ; ) is one of the thirteen provinces and territories of Canada.Ontario is located in the geographic eastern half of Canada, but it has historically and politically been considered to be part of Central Canada. Located in Central Canada, it is Canada's most populous province, with 38.3 percent of the country's population, and is the second-largest province by total area (after Quebec). Ontario is Canada's fourth-largest jurisdiction in total area when the territories of the Northwest Territories and Nunavut are included. It is home to the nation's capital city, Ottawa, and the nation's most populous city, Toronto, which is Ontario's provincial capital. Ontario is bordered by the province of Manitoba to the west, Hudson Bay and James Bay to the north, and Quebec to the east and northeast, and to the south by the U.S. states of (from west to east) Minnesota, Michigan, Ohio, Pennsylvania, and New York. Almost all of Ontario's border with the United States f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
.jpg "Click for more on -> Quirke Lake")
