What is asbestos and where does it come from - Asbestos is a commercial term used to describe two natural mineral family. Amphibole fibers five types and variety of serpentine, chrysotile, a material known ancestors. More than 4000 years ago, pottery in Africa and Finland contains asbestos, and Finland is known to contain asbestos stone for cracks on the wooden packaging. The lights of the Virgin Vestals in ancient Rome had made of asbestos so that the lamp will burn continuously, as long as they are filled with oil. Various Roman historians record the slaves who worked in asbestos mines who are not healthy compared to the others and are thought to die young.
Selikoff and Lee also reported that Charlemagne, Emperor of the Holy Roman Empire, allegedly already has the asbestos woven tablecloth, and will surprise guests with clean tablecloths in the fireplace. Body armor from 15th century recorded a raw material and in 1700 's, Norway producing asbestos Wicks and paper. The main deposits of asbestos found in the Ural mountains around1720 and cause the formation of the asbestos industry at that time with the production of textiles, socks and gloves, and bags. While in Europe, the note has a bag made of asbestos. Asbestos cloth and paper resistance it should be observed, and a suit made entirely of asbestos protected young as when walking across a roaring fire in1820.
Pope Pius IX was reported to have developed asbestos paper to keep your important documents safe from fires at the Vatican.
What is asbestos and where does it come from
What is asbestos and where does it come from
The modern history of asbestos can be traced with the discovery or the reinvention of asbestos in Canada and South Africa. In 1850, the deposits of chrysotile are known around Thetford, in Canada, and these deposits again appreciated following the forest fires while in the middle of croppings 1870-80s rock recorded not on fire. In 1876, about 50 tons of asbestos were mined in Quebec and brought to the market through the railway made special. In circa 1950 's, more than 900,000 tonnes per year are being mined with a value of almost 100 million dollars.
What is asbestos and where does it come from? In the early 1800 's, asbestos is recorded there in South Africa, particularly in the Western Cape Province, and the name was given to crocidolite or blue-colored stone known as "stone as wool." further interests does not occur until the year 1880 and the first serious production did not occur until the early 20th century. The amount of asbestos that generated far less than from Canada, the rest under 10,000 tonnes per year until 1940. In South Africa, a different form of asbestos was mined and known as amosite, an abbreviation for Asbestos Mining South Africa. In 1970, about 80,000 tonnes per year of amosite are being produced. Mines, where the majority of amosite is derived, is run by a small number of Europeans with 6500 local workers of color.
Other locations with significant production of asbestos including Italy, Russia, United States, Southern Rhodesia (now Zimbabwe), and most recently, China. Italy it never became a major producer of asbestos, due to not being able to compete with the larger amount that exists in Canada. The production of very large, rival Russia produced in Canada. In the United States, small Deposits mined in Vermont, Arizona, and California. Smaller deposits of anthophyllite which are mined in North Carolina and Georgia. In Zimbabwe, mining became the beginning of operations in the 20th century and reached a peak of 95,000 tons of production.
China has become the major manufacturers as well as rivals Canada and Russia in terms of the production of asbestos. In the year 2000, Russia leads the world with 700,000 tonnes, followed by 450,000 tons from China and 335,000 tonnes from Canada. In the year 2000, the United States produces only some 7000 tonnes of mining in California and elsewhere, it is of worldwide production 2,130,000 tons. Not surprisingly, Russia and China accounted for the majority of asbestos consumption, followed by Brazil, India, Thailand, and Japan. The United States used approximately 15,000 tons of asbestos in 2000, down from a peak of 750,000 tons per year beginning in 1970.
On the needs of asbestos usage per capita, the largest in Russia and the former Soviet Republic's State, as well as in Thailand. Among the countries with the lowest per capita usage, other than in the countries that have now banned asbestos, are Canada, the United States, and several others on one-tenth of a kilogram per capita per year. Although based on per capita India is ranked low, stood fourth in total world usage. China, while the second in the world, has a relatively low per capita, given the large population base. The main usage in the United States is for asbestos cement and roofing materials. In many around the world containing asbestos cement, building materials, friction products and textiles.
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