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It is unclear how many of these fibres were verified as asbestos because it is stated in the publication that three chrysotile and one crocidolite asbestos fibres were identified in Case 1, and two anthophyllite and one chrysotile fibre were identified in Case 2.
In the early part of the 19th century, crocidolite (blue asbestos) had already been found in Free State, Africa. In 1876, chrysotile (white asbestos) was discovered in the Thetford Township, in southeastern Quebec. Shortly afterward, Canadians established the world’s first commercial asbestos mines.
Cigarette manufacturer Lorillard (Kent's filtered cigarette) used crocidolite asbestos in its "Micronite" filter from 1952 to 1956. [71] While mostly chrysotile asbestos fibers were once used in automobile brake pads, shoes, and clutch discs, contaminants of amphiboles were present.
Asbestos was also used as a filtering agent for pharmaceutical products, wine, and beer. Strangely, in the early 1950s, when the health hazards of asbestos were more widely known, one cigarette manufac-turer decided to make use of crocidolite asbestos as a filter on cigarettes.
In a world where lamplight extended work hours, a lamp wick made from chrysotile asbestos would burn almost indefinitely. In addition to lamp wicks, the Greeks and Romans used the long fibers of the serpentine form of asbestos in weaving textiles.
crocidolite, a gray-blue to leek-green, fibrous form of the amphibole mineral riebeckite. It has a greater tensile strength than chrysotile asbestos but is much less heat-resistant, fusing to black glass at relatively low temperatures.
The link between crocidolite asbestos and mesothelioma was first discovered by Dr. Christopher Wagner in 1964. Blue asbestos was not very common in the heyday of asbestos consumption. Nevertheless, there were several consumer products containing it, including:
Crocidolite asbestos, often referred to as “blue asbestos,” is one of the most dangerous forms of asbestos known to man. This article explores the unique properties of crocidolite that make it particularly hazardous, its historical use, the health risks associated with exposure , and the legal options available for those affected by this ...
Twenty four crocidolite rich deposits had been identified in the Prieska magisterial district by 1930.1 These were mined at various times from 1919-43 by the Cape Asbestos Company and from 1929 by smaller companies. A crushing mill was built in Prieska town in 1930, and residents were exposed to asbestos fibre
Crocidolite asbestos is decomposed at around 1050 to 1100 °C through a complex reaction path involving iron oxidation (Gualtieri et al., 2004), which leads to the formation of pyroxene (NaFe–Si 2 O 6), enstatite (MgSiO 3), hematite (Fe 2 O 3) and cristobalite (SiO 2).