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Sahtu People
The Sahtú or North Slavey (historically called ''Hare'' or ''Hareskin Indians'') are a Dene First Nations people of the Athabaskan-speaking ethnolinguistic group living in the vicinity of Great Bear Lake (''Sahtú'', the source of their name), Northwest Territories, Canada. The Sahtú peoples live in Colville Lake, Deline, Fort Good Hope, Norman Wells and Tulita which form the Sahtu Region of the NWT. The Dene of the region are represented by the Sahtu Dene Council who, in 1993, signed the Sahtu Dene and Metis Comprehensive Land Claim Agreement. Sahtú groups include the ''Hare Dene'' (K'ahsho Got'ine District, today: Colville Lake and Fort Good Hope), ''Bear Lake Dene'' (Déline District), and ''Mountain Dene'' (Tulit'a District). They call themselves also ''Ɂehdzo Got’ı̨ne'' (Trap People). Ethnography An early description of Sahtú cultures is given in Alexander Mackenzie's journal of his voyage down the Mackenzie River to the Arctic Ocean in 1789. Although th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hare Indian Dog
The Hare Indian dog is an extinct domesticated canine; possibly a breed of domestic dog, coydog, or domesticated coyote; formerly found and originally bred in northern Canada by the Hare Indians for coursing. It had the speed and some characteristics of the coyote, and the domesticated temperament and other characteristics of a domestic dog. It gradually lost its usefulness as aboriginal hunting methods declined, and became extinct or lost its separate identity through interbreeding with dogs in the 19th century, though some claim the breed still exists in modified form. Appearance The Hare Indian dog was a diminutive, slenderly built domesticated canid with a small head''Fauna Boreali-americana, Or, The Zoology of the Northern Parts of British America: Containing Descriptions of the Objects of Natural History Collected on the Late Northern Land Expeditions, Under Command of Captain Sir John Franklin, R.N. By John Richardson, William Swainson, William Kirby'', published ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Athabaskan Languages
Athabaskan (also spelled ''Athabascan'', ''Athapaskan'' or ''Athapascan'', and also known as Dene) is a large family of indigenous languages of North America, located in western North America in three areal language groups: Northern, Pacific Coast and Southern (or Apachean). Kari and Potter (2010:10) place the total territory of the 53 Athabaskan languages at . Chipewyan is spoken over the largest area of any North American native language, while Navajo is spoken by the largest number of people of any native language north of Mexico. ''Athebaskan '' is a version of a Cree name for Lake Athabasca ( crm, Āðapāskāw, script=Latn 'herethere are reeds one after another'), in Canada. Cree is one of the Algonquian languages and therefore not itself an Athabaskan language. The name was assigned by Albert Gallatin in his 1836 (written 1826) classification of the languages of North America. He acknowledged that it was his choice to use that name for the language family and its ... [...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 St ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Port Radium
Port Radium is a mining area on the eastern shore of Great Bear Lake, Northwest Territories, Canada. It included the settlement of Cameron Bay as well as the Eldorado (also called Port Radium) and Echo Bay mines. The name Port Radium did not come into use until 1936 and at the time it was in reference to the region as a whole. The Eldorado mine site at LaBine Point adopted the name for its settlement in the 1940s and it has generally stuck. Location Port Radium is situated at on LaBine Point on the McTavish Arm of Great Bear Lake. Cameron Bay is situated southeast at and Port Radium Airport is at between the two to the north and consisted of a gravel airstrip next to Glacier Lake. History During a field trip along the east arm of Great Bear Lake in August 1900, James McIntosh Bell of the Geological Survey of Canada noted evidences of iron, copper, uranium and cobalt in the vicinity of Echo Bay. Thirty years later, a prospector Gilbert LaBine discovered hig ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eldorado Mine (Northwest Territories)
The Eldorado Mine is a defunct mine located in Port Radium, Northwest Territories, Canada. The site, which covers 12 hectares, is located next to Echo Bay in the shore of Great Bear Lake. The mine was 270 miles by air north of Yellowknife and approximal 850 miles north of Edmonton., on the edge of the Arctic Circle and therefore only accessible by small charter aircraft equipped with floats or skis, or larger charter aircraft flying to the south shore of the lake, followed by a boat journey. Radium, uranium and silver were extracted from the mine during several working periods between 1932 and 1982. Uranium from Eldorado was used in the Manhattan Project. The Eldorado Mine is also known as Port Radium, a name adopted for use at this specific site after 1942. The name Port Radium had previously referred to the post office and wireless radio station at Cameron Bay. History During a field trip along the east arm of Great Bear Lake in August 1900, James McIntosh Bell of the Geol ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nuclear Weapon
A nuclear weapon is an explosive device that derives its destructive force from nuclear reactions, either fission (fission bomb) or a combination of fission and fusion reactions ( thermonuclear bomb), producing a nuclear explosion. Both bomb types release large quantities of energy from relatively small amounts of matter. The first test of a fission ("atomic") bomb released an amount of energy approximately equal to . The first thermonuclear ("hydrogen") bomb test released energy approximately equal to . Nuclear bombs have had yields between 10 tons TNT (the W54) and 50 megatons for the Tsar Bomba (see TNT equivalent). A thermonuclear weapon weighing as little as can release energy equal to more than . A nuclear device no larger than a conventional bomb can devastate an entire city by blast, fire, and radiation. Since they are weapons of mass destruction, the proliferation of nuclear weapons is a focus of international relations policy. Nuclear weapons have been d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Radium
Radium is a chemical element with the symbol Ra and atomic number 88. It is the sixth element in group 2 of the periodic table, also known as the alkaline earth metals. Pure radium is silvery-white, but it readily reacts with nitrogen (rather than oxygen) upon exposure to air, forming a black surface layer of radium nitride (Ra3N2). All isotopes of radium are radioactive, the most stable isotope being radium-226 with a half-life of 1600 years. When radium decays, it emits ionizing radiation as a by-product, which can excite fluorescent chemicals and cause radioluminescence. Radium, in the form of radium chloride, was discovered by Marie and Pierre Curie in 1898 from ore mined at Jáchymov. They extracted the radium compound from uraninite and published the discovery at the French Academy of Sciences five days later. Radium was isolated in its metallic state by Marie Curie and André-Louis Debierne through the electrolysis of radium chloride in 1911. In nature, radi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Radioactive Decay
Radioactive decay (also known as nuclear decay, radioactivity, radioactive disintegration, or nuclear disintegration) is the process by which an unstable atomic nucleus loses energy by radiation. A material containing unstable nuclei is considered radioactive. Three of the most common types of decay are alpha decay ( ), beta decay ( ), and gamma decay ( ), all of which involve emitting one or more particles. The weak force is the mechanism that is responsible for beta decay, while the other two are governed by the electromagnetism and nuclear force. A fourth type of common decay is electron capture, in which an unstable nucleus captures an inner electron from one of the electron shells. The loss of that electron from the shell results in a cascade of electrons dropping down to that lower shell resulting in emission of discrete X-rays from the transitions. A common example is iodine-125 commonly used in medical settings. Radioactive decay is a stochastic (i.e. random) pro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Manhattan Project
The Manhattan Project was a research and development undertaking during World War II that produced the first nuclear weapons. It was led by the United States with the support of the United Kingdom and Canada. From 1942 to 1946, the project was under the direction of Major General Leslie Groves of the U.S. Army Corps of Engineers. Nuclear physicist Robert Oppenheimer was the director of the Los Alamos Laboratory that designed the actual bombs. The Army component of the project was designated the Manhattan District as its first headquarters were in Manhattan; the placename gradually superseded the official codename, Development of Substitute Materials, for the entire project. Along the way, the project absorbed its earlier British counterpart, Tube Alloys. The Manhattan Project began modestly in 1939, but grew to employ more than 130,000 people and cost nearly US$2 billion (equivalent to about $ billion in ). Over 90 percent of the cost was for building factories an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arctic Ocean
The Arctic Ocean is the smallest and shallowest of the world's five major oceans. It spans an area of approximately and is known as the coldest of all the oceans. The International Hydrographic Organization (IHO) recognizes it as an ocean, although some oceanographers call it the Arctic Mediterranean Sea. It has been described approximately as an estuary of the Atlantic Ocean. It is also seen as the northernmost part of the all-encompassing World Ocean. The Arctic Ocean includes the North Pole region in the middle of the Northern Hemisphere and extends south to about 60°N. The Arctic Ocean is surrounded by Eurasia and North America, and the borders follow topographic features: the Bering Strait on the Pacific side and the Greenland Scotland Ridge on the Atlantic side. It is mostly covered by sea ice throughout the year and almost completely in winter. The Arctic Ocean's surface temperature and salinity vary seasonally as the ice cover melts and freezes; its salinity is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alexander Mackenzie (explorer)
Sir Alexander Mackenzie (or MacKenzie, gd, Alasdair MacCoinnich; – 12 March 1820) was a Scottish explorer known for accomplishing the first crossing of America north of Mexico in 1793. The Mackenzie River is named after him. Early life Mackenzie was born in House in Stornoway in Lewis. He was the third of the four children born to Kenneth 'Corc' Mackenzie (1731–1780) and his wife Isabella MacIver, from another prominent mercantile family in Stornoway. When only 14 years old, Mackenzie's father served as an ensign to protect Stornoway during the Jacobite rising of 1745. He later became a merchant and held the tack of Melbost; his grandfather being a younger brother of Murdoch Mackenzie, 6th Laird of Fairburn. Educated at the same school as Colin Mackenzie, the army officer and first Surveyor General of India, he sailed to New York City with his father to join an uncle, John Mackenzie, in 1774, after his mother died in Scotland. In 1776, during the American War of I ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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