Asbestos blue

Fig. 10-4 Insulating Joint with explosion-proof spark gap (I/sohz = 1 1/50//s = 2.2 kV surge current =100 kA). 1, insulating flange 2, hexagonal nut 3, insulator ring 4, insulator sleeve 5, insulator disc 6, steel disc 7, blue asbestos gasket 8, explosion-proof spark gap.

Of the fibrous fillers which greatly reduce the brittleness, blue asbestos fibre is normally used for battery boxes, the principal outlet. Other materials that may be used include cotton fibres, ground wood, slag wool and ground cork. 

Mesotheliomas are the characteristic asbestos-related tumours of the pleura. Exposure of explants of human pleura to crocidolite blue asbestos in culture produces a... 

Alario-Franco, M. A., J. L. Hutchison, D, A. Jefferson, and J. R. Thomas (1977). Structural imperfections and morphology of crocidolite (blue asbestos). Nature 266 520—521. 

Blue asbestos, blue cape asbestos Categorical and trade names for crocidolite-as-bestos, which has a pale blue, lavender, or bluish green color en masse. Blue asbestos was a synonym for crocidolite in mineralogy before the term was adopted in the trade. 

Crocidolite-asbestos A trade designation for a specific type of amphibole-asbestos composed of the mineral riebeckitc. It is also called blue asbestos and, if obtained from South Africa, may be labeled cape asbestos. 

Double-chain silicates. Double-chain silicates, (Si40n)n6n, are known as amphiboles, such as tremolite, Ca2Mg5(0H)2[(Si40n)2]. These include the true asbestoses, such as crocidolite or blue asbestos,... 

CROCIDOLITE (Blue Asbestos). The mineral crocidolilc may be considered as u fibrous variety of the monoclinic amphibole. riebeckile. Ii is also known as a massive mineral. Iis hardness is 4 specific gravity, 3.2-3.3 luster, silky to dull color, blue or bluish-green. It is found in Austria, France. Bolivia, the Republic of South Africa (the variety known as tiger s-eye) and in the United States, in Massachusetts and Rhode Island. The name crocidolile is derived from the Greek, meaning to weave, in reference to its fibrous appearance. See also Uat s-Eye. 

There are various forms of asbestos and not all are equally hazardous. White asbestos, or chrysotile, is the form most commonly used and is the least harmful, being relatively inert in living systems. Crocidolite, or blue asbestos, is especially hazardous and may contaminate white asbestos. 

SYNS AMORPHOUS CROCIDOLITE ASBESTOS ASBESTOS (ACGIH) BLUE ASBESTOS (DOT) BROWN ASBESTOS (DOT) O CROCIDOLITE ASBESTOS CROCIDOLITE (DOT) FIBROUS CROCIDOUTE ASBESTOS KROKYDOLITH (GERMAN) NCI-C09007... 

Synonyms No data Mysorite, brown asbestos fibrous cummingtonite/ grunerite Serpentine asbestos white asbestos Silicic acid calcium magnesium salt (8 4) No data Ferroantho- phyllite azbolen asbestos Blue asbestos... 

Booth SJ, Weaver EJ. 1986. Malignant pleural mesothelioma five years after domestic exposure to blue asbestos [Letter], Lancet 1 435. 

Hansen J, de Klerk NH, Eccles JL, et al. 1993. Malignant mesothelioma after environmental exposure to blue asbestos. Int J Cancer 54(4) 578-581. 

Crocidolite— A type of asbestos in the amphibole group it is also known as blue asbestos. 

Muscovite and biotite have very similar compositions. Why is one "white mica" and the other "black mica" In the same vein, talc is white, chrysotile is while asbestos, crocidolite is blue asbestos and amosilc is a gray-bruwm asbestos. 

Reid A, Ambrosini G, De Klerk N, Fritschi L, and Musk B (2004) Aerodigestive and gastrointestinal tract cancers and exposure to crocidolite (blue asbestos) Incidence and mortality among former crocidolite workers. International Journal of Cancer 111(5) 757-761. 

Increased cancer risk caused by carcinogens in the work-place is also well-established. In addition to the effects of benzpyrene and other polycyclic aromatic compounds already mentioned, the high incidence of mesothelioma, a rare lung cancer amongst those exposed to the blue asbestos fibres is irrefutable. There is also good evidence that other cancers have been caused by such diverse chemicals as vinyl chloride (used in the manufacture... 

We worry with some justification about chemical carcinogens in the workplace - blue asbestos and chromium salts being prime examples - but there is a high degree of over-reaction to things like pesticide residues and artificial flavours and colours in our diet. As the American biochemist Bruce Ames (inventor of the so-called Ames test for mutagenicity) has pointed out ... 

Asbestos is the term for the fibrous form of a number of naturally occurring crystalline silicate minerals, which have been exploited commercially and are still mined and processed in various countries such as South Africa, Canada, the Former Soviet Union and China. The three main types of asbestos that have been commercially produced are Chrysotile, Amosite and Crocidolite, which are commonly referred to as White, Brown and Blue asbestos respectively. Other rarer forms of asbestos include Tremolite, Anthophyllite and Actinolite, which may be found either individually or as contamination within the three main types. 

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