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Muskrat Falls
Muskrat Falls was a natural waterfall located on the Churchill River (Atlantic), Churchill River about west of Happy Valley-Goose Bay, Labrador. The hydropower potential of Muskrat Falls was recognized in the early 1900s when the Grand River Pulp and Lumber Company proposed to build a dam along with a paper mill. Neither was ever constructed. In the early 1970s an engineering and geotechnical survey was carried out to determine the hydro potential of the site. The site will be developed as part of the Lower Churchill Project, despite concerns of methylmercury poisoning by researchers and local Inuit. It is rumored that in 1944 the crew of a German submarine had beached it at the falls when they decided to withdraw from World War II. The rumour inspired a novel by Walter Sellars, ''Hard Aground'' published in 1992, but was thought to be unsupported. In 2010, coast guards searching for three men who died after being carried over Muskrat Falls found a object on the bottom of the C ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Waterfall
A waterfall is a point in a river or stream where water flows over a vertical drop or a series of steep drops. Waterfalls also occur where meltwater drops over the edge of a tabular iceberg or ice shelf. Waterfalls can be formed in several ways, but the most common method of formation is that a river courses over a top layer of resistant bedrock before falling on to softer rock, which Erosion, erodes faster, leading to an increasingly high fall. Waterfalls have been studied for their impact on species living in and around them. Humans have had a distinct relationship with waterfalls for years, travelling to see them, exploring and naming them. They can present formidable barriers to navigation along rivers. Waterfalls are religious sites in many cultures. Since the 18th century they have received increased attention as tourist destinations, sources of hydropower, andparticularly since the mid-20th centuryas subjects of research. Definition and terminology A waterfall is gen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Churchill River (Atlantic)
The Churchill River, formerly known by #Names, other names, is a rivers of Canada, river in Newfoundland and Labrador, Canada. It flows east from the Smallwood Reservoir into the Atlantic Ocean via Lake Melville. The river is long and drains an area of , making it the longest river in Atlantic Canada. Names The Innu language, Innu name of the river is ' or ' ("Grand River") among the Labrador Innu and ' ("Churchill Falls River") among the Central Innu, the Labrador Métis (NunatuKavut), and Nunatsiavut. The latter name was formerly calqued into English as the , the name commonly used by locals. In 1821, Captain William Martin of HMS Clinker (1813), HM brig ''Clinker'' renamed the river the after the then-current List of lieutenant governors of Newfoundland and Labrador#Commodore-Governors of Newfoundland, 1729–1825, commodore-governor of Newfoundland Sir Charles Hamilton, 2nd Baronet, of Trebinshun House, Charles Hamilton. The name gradually supplanted use of the Grand River ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Happy Valley-Goose Bay
Happy Valley-Goose Bay (Inuit: ''Vâli'') is a town in the province of Newfoundland and Labrador, Canada. Located in the central part of Labrador on the coast of Lake Melville and the Churchill River, Happy Valley-Goose Bay is the largest population centre in that region with an estimated 8,109 residents in 2016. Incorporated in 1973, it comprises the former town of Happy Valley and the Local Improvement District of Goose Bay. Built on a large sandy plateau in 1941, the town is home to the largest military air base in northeastern North America, CFB Goose Bay. History In the summer of 1941, Eric Fry, an employee of the Canadian Department of Mines and Resources on loan to the Royal Canadian Air Force, selected a large sandy plateau near the mouth of the Goose River to build the Goose Bay Air Force Base. Docking facilities for transportation of goods and personnel were built at Terrington Basin. Goose Air Base became a landing and refuelling stop for the Atlantic Ferry route. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Labrador
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Hydropower
Hydropower (from el, ὕδωρ, "water"), also known as water power, is the use of falling or fast-running water to Electricity generation, produce electricity or to power machines. This is achieved by energy transformation, converting the Potential energy, gravitational potential or kinetic energy of a water source to produce power. Hydropower is a method of sustainable energy production. Hydropower is now used principally for Hydroelectricity, hydroelectric power generation, and is also applied as one half of an energy storage system known as pumped-storage hydroelectricity. Hydropower is an attractive alternative to fossil fuels as it does not directly produce Carbon dioxide in Earth's atmosphere, carbon dioxide or other Air pollution, atmospheric pollutants and it provides a relatively consistent source of power. Nonetheless, it has economic, sociological, and environmental downsides and requires a sufficiently energetic source of water, such as a river or elevated lake. Int ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Geotechnical
Geotechnical engineering is the branch of civil engineering concerned with the engineering behavior of earth materials. It uses the principles of soil mechanics and rock mechanics for the solution of its respective engineering problems. It also relies on knowledge of geology, hydrology, geophysics, and other related sciences. Geotechnical (rock) engineering is a subdiscipline of geological engineering. In addition to civil engineering, geotechnical engineering also has applications in military, mining, petroleum, coastal engineering, and offshore construction. The fields of geotechnical engineering and engineering geology have knowledge areas that overlap, however, while geotechnical engineering is a specialty of civil engineering, engineering geology is a specialty of geology: They share the same principles of soil mechanics and rock mechanics, but differ in the application. History Humans have historically used soil as a material for flood control, irrigation purposes, buria ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lower Churchill Project
The Lower Churchill Project is an ongoing hydroelectric project in the Labrador region of Newfoundland and Labrador, Canada, to develop the remaining 35 per cent of the Churchill River that was not developed by the Churchill Falls Generating Station. The station at Muskrat Falls will have a capacity of over 824 MW and provide 4.9 TWh of electricity per year. A $6.2 billion deal between Newfoundland and Labrador's Nalcor Energy and Halifax, Nova Scotia-based Emera to develop the project was announced in November 2010. On November 30, 2012, a federal loan guarantee deal for financing of the project was signed by Prime Minister Stephen Harper, Newfoundland and Labrador Premier Kathy Dunderdale and Nova Scotia Premier Darrell Dexter. On December 17, 2012, the provincial government announced project sanction. Emera received approval to proceed with the Maritime Link from the Nova Scotia Utility and Review Board in 2013. Financial close for the loan guarantee occurred in late 2013. On ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Methylmercury
Methylmercury (sometimes methyl mercury) is an organometallic cation with the formula . It is the simplest organomercury compound. Methylmercury is extremely toxic, and its derivatives are the major source of organic mercury for humans. It is a bioaccumulative environmental toxicant. Structure and chemistry "Methylmercury" is a shorthand for the hypothetical "methylmercury cation", sometimes written "''methylmercury(1+) cation''" or "''methylmercury(II) cation''". This functional group is composed of a methyl group bonded to an atom of mercury. Its chemical formula is (sometimes written as ).The Methylmercury compound has an overall charge of +1, with Hg in the +2 oxidation state.Methylmercury exists as a substituent in many complexes of the type (L = Lewis base) and MeHgX (X = anion). As a positively charged ion it readily combines with anions such as chloride (), hydroxide () and nitrate (). It has particular affinity for sulfur-containing anions, particularly thiols (). ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Inuit
Inuit (; iu, ᐃᓄᐃᑦ 'the people', singular: Inuk, , dual: Inuuk, ) are a group of culturally similar indigenous peoples inhabiting the Arctic and subarctic regions of Greenland, Labrador, Quebec, Nunavut, the Northwest Territories, and Alaska. Inuit languages are part of the Eskimo–Aleut languages, also known as Inuit-Yupik-Unangan, and also as Eskaleut. Inuit Sign Language is a critically endangered language isolate used in Nunavut. Inuit live throughout most of Northern Canada in the territory of Nunavut, Nunavik in the northern third of Quebec, Nunatsiavut and NunatuKavut in Labrador, and in various parts of the Northwest Territories, particularly around the Arctic Ocean, in the Inuvialuit Settlement Region. With the exception of NunatuKavut, these areas are known, primarily by Inuit Tapiriit Kanatami, as Inuit Nunangat. In Canada, sections 25 and 35 of the Constitution Act of 1982 classify Inuit as a distinctive group of Aboriginal Canadians wh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Submarine
A submarine (or sub) is a watercraft capable of independent operation underwater. It differs from a submersible, which has more limited underwater capability. The term is also sometimes used historically or colloquially to refer to remotely operated vehicles and Autonomous underwater vehicle, robots, as well as medium-sized or smaller vessels, such as the midget submarine and the wet sub. Submarines are referred to as ''boats'' rather than ''ships'' irrespective of their size. Although experimental submarines had been built earlier, submarine design took off during the 19th century, and they were adopted by several navies. They were first widely used during World War I (1914–1918), and are now used in many navy, navies, large and small. Military uses include attacking enemy surface ships (merchant and military) or other submarines, and for aircraft carrier protection, Blockade runner, blockade running, Ballistic missile submarine, nuclear deterrence, reconnaissance, conventio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
World War II
World War II or the Second World War, often abbreviated as WWII or WW2, was a world war that lasted from 1939 to 1945. It involved the vast majority of the world's countries—including all of the great powers—forming two opposing military alliances: the Allies and the Axis powers. World War II was a total war that directly involved more than 100 million personnel from more than 30 countries. The major participants in the war threw their entire economic, industrial, and scientific capabilities behind the war effort, blurring the distinction between civilian and military resources. Aircraft played a major role in the conflict, enabling the strategic bombing of population centres and deploying the only two nuclear weapons ever used in war. World War II was by far the deadliest conflict in human history; it resulted in 70 to 85 million fatalities, mostly among civilians. Tens of millions died due to genocides (including the Holocaust), starvation, ma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
U-boat
U-boats were naval submarines operated by Germany, particularly in the First and Second World Wars. Although at times they were efficient fleet weapons against enemy naval warships, they were most effectively used in an economic warfare role (commerce raiding) and enforcing a naval blockade against enemy shipping. The primary targets of the U-boat campaigns in both wars were the merchant convoys bringing supplies from Canada and other parts of the British Empire, and from the United States, to the United Kingdom and (during the Second World War) to the Soviet Union and the Allied territories in the Mediterranean. German submarines also destroyed Brazilian merchant ships during World War II, causing Brazil to declare war on both Germany and Italy on 22 August 1942. The term is an anglicised version of the German word ''U-Boot'' , a shortening of ''Unterseeboot'' ('under-sea-boat'), though the German term refers to any submarine. Austro-Hungarian Navy submarines were also kno ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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