|
Blasting Mat
A blasting mat is a mat usually made of sliced-up rubber tires bound together with ropes, cables or chains. They are used during rock blasting to contain the blast, prevent flying rocks and suppress dust. Use Blasting mats are used when explosives are detonated in places such as quarries or construction sites. The mats are placed over the blasting area to contain the blast, suppress noise and dust as well as prevent high velocity rock fragments called fly rock (or flyrock) from damaging structures, people or the environment in proximity to the blast site. The amount of fly rock can be reduced by proper drilling in the bedrock for the explosives, but in practice it is hard to avoid. Mats can be used singly or in layers depending on the size of the blast charge, the type of mat and the amount of protection needed. They can be used horizontally on the ground or vertically hanging from cranes or attached to structures. In the vertical capacity the mats are sometimes referred to as b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rixö Granitbrott 8
Rixö is a locality situated in Lysekil Municipality, Västra Götaland County, Sweden. It had 357 inhabitants in 2010. History The settlement grew up around the granite quarry and stonemasonry industry in the shore of Brofjorden. The industry was started on a German initiative and was run by Skandinaviska Granit AB in 1875–1964. Most of the stone was exported to Germany for the building of Autobahn; some went to Argentina and to various constructions in Sweden. As of 2018, only a small part of the quarry is in operation. Geography In Brofjorden, opposite Rixö is Ryxö island, a designated nature reserve A nature reserve (also known as a wildlife refuge, wildlife sanctuary, biosphere reserve or bioreserve, natural or nature preserve, or nature conservation area) is a protected area of importance for flora, fauna, or features of geological or .... References External links Populated places in Västra Götaland County Populated places in Lysekil Munici ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
IRT Third Avenue Line
The IRT Third Avenue Line, commonly known as the Third Avenue Elevated, Third Avenue El, or Bronx El, was an elevated railway in Manhattan and the Bronx, New York City. Originally operated by the New York Elevated Railway, an independent railway company, it was acquired by the Interborough Rapid Transit Company (IRT) and eventually became part of the New York City Subway system. The first segment of the line, with service at most stations, opened from South Ferry to Grand Central Depot on August 26, 1878. Service was extended to Harlem in Manhattan on December 30. In 1881 this line already began the 24/7 service. Service in Manhattan was phased out in the early 1950s and closed completely on May 12, 1955. The remaining service in the Bronx was designated as part of the 8 route until it was discontinued on April 29, 1973. The Third Avenue El was the last elevated line to operate in Manhattan, other than the on the IRT Broadway–Seventh Avenue Line (which has elevated sectio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vehicle Recycling
__NOTOC__ Vehicle recycling is the dismantling of vehicles for spare parts. At the end of their useful life, vehicles have value as a source of spare parts and this has created a vehicle dismantling industry. The industry has various names for its business outlets including wrecking yard, auto dismantling yard, car spare parts supplier, and recently, auto or vehicle recycling. Vehicle recycling has always occurred to some degree but in recent years manufacturers have become involved in the process. A car crusher is often used to reduce the size of the scrapped vehicle for transportation to a steel mill. Approximately 12-15 million vehicles reach the end of their use each year in just the United States alone. These automobiles, although out of commission, can still have a purpose by giving back the metal and other recyclable materials that are contained in them. The vehicles are shredded and the metal content is recovered for recycling, while in many areas, the rest is further ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mine Safety
Mine safety is a broad term referring to the practice of controlling and managing a wide range of hazards associated with the life cycle of mining-related activities. Mine safety practice involves the implementation of recognised hazard controls and/or reduction of risks associated with mining activities to legally, socially and morally acceptable levels. While the fundamental principle of mine safety is to remove health and safety risks to mine workers, mining safety practice may also focus on the reduction of risks to plant (machinery) together with the structure and orebody of the mine. Safety has long been a concern in the mining business, especially in underground mining. The Courrières mine disaster, Europe's worst mining accident, involved the death of 1,099 miners in Northern France on March 10, 1906. This disaster was surpassed only by the Benxihu Colliery accident in China on April 26, 1942, which killed 1,549 miners. While mining today is substantially safer than it was ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mining Equipment
Mining is the extraction of valuable minerals or other geological materials from the Earth, usually from an ore body, lode, vein, seam, reef, or placer deposit. The exploitation of these deposits for raw material is based on the economic viability of investing in the equipment, labor, and energy required to extract, refine and transport the materials found at the mine to manufacturers who can use the material. Ores recovered by mining include metals, coal, oil shale, gemstones, limestone, chalk, dimension stone, rock salt, potash, gravel, and clay. Mining is required to obtain most materials that cannot be grown through agricultural processes, or feasibly created artificially in a laboratory or factory. Mining in a wider sense includes extraction of any non-renewable resource such as petroleum, natural gas, or even water. Modern mining processes involve prospecting for ore bodies, analysis of the profit potential of a proposed mine, extraction of the desired materials, an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mining Engineering
Mining in the engineering discipline is the extraction of minerals from underneath, open pit, above or on the ground. Mining engineering is associated with many other disciplines, such as mineral processing, exploration, excavation, geology, and metallurgy, geotechnical engineering and surveying. A mining engineer may manage any phase of mining operations, from exploration and discovery of the mineral resources, through feasibility study, mine design, development of plans, production and operations to mine closure. With the process of Mineral extraction, some amount of waste and uneconomic material are generated which are the primary source of pollution in the vicinity of mines. Mining activities by their nature cause a disturbance of the natural environment in and around which the minerals are located. Mining engineers must therefore be concerned not only with the production and processing of mineral commodities, but also with the mitigation of damage to the environment bot ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Military Engineering
Military engineering is loosely defined as the art, science, and practice of designing and building military works and maintaining lines of military transport and military communications. Military engineers are also responsible for logistics behind military tactics. Modern military engineering differs from civil engineering. In the 20th and 21st centuries, military engineering also includes other engineering disciplines such as mechanical and electrical engineering techniques. According to NATO, "military engineering is that engineer activity undertaken, regardless of component or service, to shape the physical operating environment. Military engineering incorporates support to maneuver and to the force as a whole, including military engineering functions such as engineer support to force protection, counter-improvised explosive devices, environmental protection, engineer intelligence and military search. Military engineering does not encompass the activities undertaken by those ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Explosion Protection
Explosion protection is used to protect all sorts of buildings and civil engineering infrastructure against internal and external explosions or deflagrations. It was widely believed until recently that a building subject to an explosive attack had a chance to remain standing only if it possessed some extraordinary resistive capacity. This belief rested on the assumption that the specific impulse or the time integral of pressure, which is a dominant characteristic of the blast load, is fully beyond control. Techniques Avoidance Avoidance makes it impossible for an explosion or deflagration to occur, for instance by means of suppressing the heat and the pressure needed for an explosion using an aluminum mesh structure such as eXess, by means of consistent displacement of the O2 necessary for an explosion or deflagration to take place, by means of padding gas (f. i. CO2 or N2), or, by means of keeping the concentration of flammable content of an atmosphere consistently below or abov ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Explosives Engineering
Explosives engineering is the field of science and engineering which is related to examining the behavior and usage of explosive materials. Topics Some of the topics that explosives engineers study, research, and work on include: * Development and characterization of new explosive materials in various forms * Analysis of the physical process of detonation * Explosive generated shock waves and their effects on materials * Safety testing of explosives * Analysis and engineering of rock blasting for mining * Design and analysis of shaped charges and reactive armor * Design and analysis of military explosives such as shells, aerial bombs, missile warheads, etc. * Bomb disposal *Drilling and Blasting *Explosive Manufacturing *Explosives Safety Education and Certification *Drilling Safety Education and Certification *Blasting Safety Education and Certification Organizations Listed in Alphabetical Order: * Explosives Academy * International Society of Explosives Engineers (ISE ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
CBC News
CBC News is a division of the Canadian Broadcasting Corporation responsible for the news gathering and production of news programs on the corporation's English-language operations, namely CBC Television, CBC Radio, CBC News Network, and CBC.ca. Founded in 1941, CBC News is the largest news broadcaster in Canada and has local, regional, and national broadcasts and stations. It frequently collaborates with its organizationally separate French-language counterpart, Radio-Canada Info. History The first CBC newscast was a bilingual radio report on November 2, 1936. The CBC News Service was inaugurated during World War II on January 1, 1941, when Dan McArthur, chief news editor, had Wells Ritchie prepare for the announcer Charles Jennings a national report at 8:00 pm. Readers who followed Jennings were Lorne Greene, Frank Herbert and Earl Cameron. ''CBC News Roundup'' (French counterpart: ''La revue de l'actualité'') started on August 16, 1943, at 7:45 pm, being replaced by ''T ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cape Ray, Newfoundland And Labrador
Cape Ray is a local service district and designated place in the Canadian province of Newfoundland and Labrador. It is on the southwest coast of the island of Newfoundland. History Cape Ray, the cape located near the community was the terminus for the overland portion of the transatlantic telegraph cable from St. John's to Cape Ray. From here the cable then takes a submarine route to Cape Breton Island. The area is also known for its discovery of Dorset Paleoeskimo artifacts. An archaeological site has been established in the area. Geography Cape Ray is in Newfoundland within Subdivision H of Division No. 3. The community is located on the southwest coast just north of the town of Port aux Basques on Route 408. Nearby is the Cape from which the community draws its name. At the entrance to the harbour is a beach known for its 16 kilometer stretch of white sandy beach where the J.T. Cheeseman Provincial Park is located. In the past, Cape Ray had been prospected for ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tarpaulin
A tarpaulin ( , ) or tarp is a large sheet of strong, flexible, water-resistant or waterproof material, often cloth such as canvas or polyester coated with polyurethane, or made of plastics such as polyethylene. Tarpaulins often have reinforced grommets at the corners and along the sides to form attachment points for rope, allowing them to be tied down or suspended. Inexpensive modern tarpaulins are made from woven polyethylene; this material is so associated with tarpaulins that it has become colloquially known in some quarters as polytarp. Uses Tarpaulins are used in many ways to protect persons and things from wind, rain, and sunlight. They are used during construction or after disasters to protect partially built or damaged structures, to prevent mess during painting and similar activities, and to contain and collect debris. They are used to protect the loads of open trucks and wagons, to keep wood piles dry, and for shelters such as tents or other temporary structures. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
