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Ashio Copper Mine
The was a copper mine located in the town of Ashio, Tochigi (now part of the city of Nikkō, Tochigi), in the northern Kantō region of Japan. It was the site of Japan's first major pollution disaster in the 1880s and the scene of the 1907 miners' riots. The pollution disaster led to the birth of the Japanese environmental movement and the 1897 Third Mine Pollution Prevention Order. It also triggered changes in the mine's operations, which had played a role in the 1907 riots, part of a string of mining disputes in 1907. During World War II the mine was worked by POW forced labour. History Copper deposits are recorded as having been discovered in the area around the year 1550, but exploitation did not begin until two local households received an official permit in 1610 to establish a mine. In 1611, copper from the site was presented to officials of the shogunate; and shortly thereafter, Ashio was officially listed as a copper mine belonging to the Tokugawa shogunate. Copper, in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ashio, Tochigi
was a town located in Kamitsuga District, Tochigi, Japan. As of 2003, the town had an estimated population of 3,465 and a density of 18.65 persons per km². The total area was 185.79 km². On March 20, 2006, Ashio, along with the city of Imaichi, the town of Fujihara, and the village of Kuriyama (both from Shioya District), was merged into the expanded city of Nikkō. The Ashio Copper Mine was located in Ashio. This copper mine caused a major pollution problem in Japan at the beginning of the 20th century. Subsequent environmental problems related to the mine are still evident along the river, in Tochigi, Gunma and Ibaraki Prefectures. In 1907 the Ashio miners rioted. During World War II a POW camp was based here to supply slave labour to the copper mines. The following communities agreed to seek the permission of the governor of the prefecture to merge on March 1, 2006: * Nikkō * Imaichi * Ashio * Fujihara * Kuriyama References * Nimura Kazuo. (1997) ''The ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Japanese Mon (currency)
The was the currency of Japan from the Muromachi period in 1336 until the early Meiji period in 1870. It co-circulated with the new '' sen'' until 1891. The Kanji for ''mon'' is and the character for currency was widely used in the Chinese-character cultural sphere, e.g. Chinese wén, Korean mun, Vietnamese văn. Throughout Japanese history, there were many styles of currency of many shapes, styles, designs, sizes and materials, including gold, silver, bronze, etc. Coins denominated in mon were cast in copper or iron and circulated alongside silver and gold ingots denominated in ''shu'', ''bu'' and ''ryō'', with 4000 mon = 16 shu = 4 bu = 1 ryō. In 1869, due to depreciation against gold, the new fixing officially was set for 1 ryō/yen = 1,000 mon. The yen started to replace the old non-decimal denominations in 1870: in the 3rd quarter of 1870, the first new coins appeared, namely 5, 10, 50 sen silver and 2, 5, 10, 20 Yen. Smaller sen coins did not appear before spring, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Watarase River
The is a major river in the northern Kantō region of Japan. A tributary of the Tone River, it is in length and drains an area of . ( official page) (Retrieved on June 29, 2009) Its source is at Mount Sukai on the boundary of the city of [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Historic Sites Of Japan
is a collective term used by the Japanese government's Law for the Protection of Cultural Properties to denote Cultural Properties of JapanIn this article, capitals indicate an official designation as opposed to a simple definition, e.g "Cultural Properties" as opposed to "cultural properties". as historic locations such as shell mounds, ancient tombs, sites of palaces, sites of forts or castles, monumental dwelling houses and other sites of high historical or scientific value; gardens, bridges, gorges, mountains, and other places of great scenic beauty; and natural features such as animals, plants, and geological or mineral formations of high scientific value. Designated monuments of Japan The government ''designates'' (as opposed to '' registers'') "significant" items of this kind as Cultural Properties (文化財 ''bunkazai'') and classifies them in one of three categories: * * , * . Items of particularly high significance may receive a higher classification as: * * * , ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Industrial Waste
Industrial waste is the waste produced by industrial activity which includes any material that is rendered useless during a manufacturing process such as that of factories, mills, and mining operations. Types of industrial waste include dirt and gravel, masonry and concrete, scrap metal, oil, solvents, chemicals, scrap lumber, even vegetable matter from restaurants. Industrial waste may be solid, semi-solid or liquid in form. It may be hazardous waste (some types of which are toxic) or non-hazardous waste. Industrial waste may pollute the nearby soil or adjacent water bodies, and can contaminate groundwater, lakes, streams, rivers or coastal waters. Industrial waste is often mixed into municipal waste, making accurate assessments difficult. An estimate for the US goes as high as 7.6 billion tons of industrial waste produced annually, as of 2017. Most countries have enacted legislation to deal with the problem of industrial waste, but strictness and compliance regimes vary. Enfor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sulfuric Acid
Sulfuric acid (American spelling and the preferred IUPAC name) or sulphuric acid ( Commonwealth spelling), known in antiquity as oil of vitriol, is a mineral acid composed of the elements sulfur, oxygen and hydrogen, with the molecular formula . It is a colorless, odorless and viscous liquid that is miscible with water. Pure sulfuric acid does not exist naturally on Earth due to its strong affinity to water vapor; it is hygroscopic and readily absorbs water vapor from the air. Concentrated sulfuric acid is highly corrosive towards other materials, from rocks to metals, since it is an oxidant with powerful dehydrating properties. Phosphorus pentoxide is a notable exception in that it is not dehydrated by sulfuric acid, but to the contrary dehydrates sulfuric acid to sulfur trioxide. Upon addition of sulfuric acid to water, a considerable amount of heat is released; thus the reverse procedure of adding water to the acid should not be performed since the heat released ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arsenic Trioxide
Arsenic trioxide, sold under the brand name Trisenox among others, is an inorganic compound and medication. As an industrial chemical, whose major uses include in the manufacture of wood preservatives, pesticides, and glass. As a medication, it is used to treat a type of cancer known as acute promyelocytic leukemia. For this use it is given by injection into a vein. Common side effects include vomiting, diarrhea, swelling, shortness of breath, and headaches. Severe side effects may include APL differentiation syndrome and heart problems. Use during pregnancy or breastfeeding may harm the baby. Arsenic trioxide has the formula . Its mechanism in treating cancer is not entirely clear. Arsenic trioxide was approved for medical use in the United States in 2000. It is on the World Health Organization's List of Essential Medicines. Approximately 50,000 tonnes are produced a year. Due to its toxicity, a number of countries have regulations around its manufacture and sale. Uses Med ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Copper Extraction
Copper extraction refers to the methods used to obtain copper from its ores. The conversion of copper consists of a series of physical and electrochemical processes. Methods have evolved and vary with country depending on the ore source, local environmental regulations, and other factors. As in all mining operations, the ore must usually be beneficiated (concentrated). The processing techniques depend on the nature of the ore. If the ore is primarily sulfide copper minerals (such as chalcopyrite), the ore is crushed and ground to liberate the valuable minerals from the waste (' gangue') minerals. It is then concentrated using mineral flotation. The concentrate is typically sold to distant smelters, although some large mines have smelters located nearby. Such colocation of mines and smelters was more typical in the 19th and early 20th centuries, when smaller smelters could be economic. The sulfide concentrates are typically smelted in such furnaces as the Outokumpu or ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Copper Mine
Copper extraction refers to the methods used to obtain copper from its ores. The conversion of copper consists of a series of physical and electrochemical processes. Methods have evolved and vary with country depending on the ore source, local environmental regulations, and other factors. As in all mining operations, the ore must usually be beneficiated (concentrated). The processing techniques depend on the nature of the ore. If the ore is primarily sulfide copper minerals (such as chalcopyrite), the ore is crushed and ground to liberate the valuable minerals from the waste ('gangue') minerals. It is then concentrated using mineral flotation. The concentrate is typically sold to distant smelters, although some large mines have smelters located nearby. Such colocation of mines and smelters was more typical in the 19th and early 20th centuries, when smaller smelters could be economic. The sulfide concentrates are typically smelted in such furnaces as the Outokumpu or In ... [...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] |
Shibusawa Eiichi
was a Japanese industrialist widely known today as the "father of Japanese capitalism". He spearheaded the introduction of Western capitalism to Japan after the Meiji Restoration. He introduced many economic reforms including use of double-entry accounting, joint-stock corporations and modern note-issuing banks. He founded the first modern bank based on joint stock ownership in Japan. The bank was aptly named The First National Bank (''Dai Ichi Kokuritsu Ginkō'', now merged into Mizuho Bank) and had the power to issue its own notes. Through this bank, he founded hundreds of other joint stock corporations in Japan. Many of these companies still survive to this day as quoted companies in the Tokyo Stock Exchange, which Shibusawa also founded. The Japanese Chamber of Commerce and Industry was founded by him as well. He was also involved in the foundation of many hospitals, schools, universities (including the first women's university), the Imperial Hotel in Tokyo and charit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Furukawa Ichibei
was a Japanese businessman who founded one of the fifteen largest industrial conglomerates in Japan, specializing in electrical goods, chemicals and metals. He bought the Ashio copper mine from the Japanese government in 1877, which he later organized, with his other holdings, into an industrial conglomerate called the Furukawa zaibatsu, one of the most important in Japan. Japanese companies today with the names "Furukawa" and "Fuji", often belong to this group. Biography Furukawa's school education began and ended before Commodore Perry's ships entered Japanese waters. His parents were lower middle-class and could not afford to give him a higher education. It was about the time of the treaty that opened Japan to commerce with the United States and other civilized nations, that the strong traits manifested by the boy attracted the attention of a business man in his native town. He was adopted by an eccentric man named Furukawa Tarozaemon, who gave his adopted son some schoo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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