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The Dangers of Exposure to Asbestos

Asbestos was found in thousands of commercial products before it was banned. According to studies, exposure to asbestos can cause cancer, as well as other health issues.

You cannot tell if something includes asbestos simply by looking at it and you can't taste or smell it. Asbestos is only detected when the substances that contain it are broken or drilled.

Chrysotile

At its height, chrysotile was responsible for 99percent of the asbestos that was produced. It was widely used in industries which included construction, fireproofing, and insulation. If workers were exposed for long periods to this toxic material, they could contract mesothelioma or other asbestos related diseases. Since the 1960s, when mesothelioma began to become a major concern the use of asbestos has been reduced significantly. It is still present in many products we use today.

Chrysotile is safe to use if a thorough safety and handling plan is in place. People who handle chrysotile do not at risk of being exposed to a high degree of risk based on the current limits of exposure. The inhalation of airborne particles has been linked with lung fibrosis and lung cancer. This has been proven for the intensity (dose) as well as duration of exposure.

A study that looked at a factory that used almost exclusively chrysotile for manufacturing friction materials, compared mortality rates at this factory with national mortality rates. It was found that, for 40 years of processing asbestos chrysotile in low levels of exposure there was no signifi cant extra mortality in the factory.

Chrysotile fibres tend to be shorter than other types of asbestos. They can penetrate the lungs and enter the bloodstream. They are therefore more likely to cause health problems than fibres with longer lengths.

When chrysotile is mixed into cement, it's very difficult for the fibres to breathe and pose any health risk. The fibre cement products are extensively used all over the world particularly in buildings such as schools and hospitals.

Studies have shown that chrysotile has a lower chance to cause disease than amphibole asbestos such as amosite and crocidolite. These amphibole kinds have been the main cause of mesothelioma and various asbestos-related illnesses. When chrysotile gets mixed with cement, it creates a strong, flexible construction product that can withstand the most extreme conditions in the weather and other environmental dangers. It is also easy to clean up after use. Asbestos fibres can easily be removed by a professional and safely eliminated.

Amosite

Asbestos is a grouping of fibrous silicates found in certain types of rock formations. It is comprised of six main groups: amphibole, serpentine anthophyllite, tremolite, anthophyllite, crocidolite (IARC 1973).

Asbestos minerals are composed of thin, long fibers that vary in length from fine to wide. They can be curled or straight. These fibres can be found in nature in bundles or as individual fibrils. Asbestos minerals can also be found as a powder (talc) or mixed with other minerals and sold as vermiculite and talcum powder, which have been widely used in consumer products such as baby powder cosmetics, face powder and baby powder.

Asbestos was widely used during the early two-thirds of the 20th century for construction of ships insulation, fireproofing, insulation and other construction materials. The majority of asbestos-related exposures in the workplace were in the air, but some workers were also exposed to asbestos lawsuit-bearing rock fragments and contaminated vermiculite. Exposures varied from industry industry, era to era, and geographical location.

The exposure to asbestos in the workplace is mostly because of inhalation. However certain workers have been exposed through skin contact or eating food that is contaminated. Asbestos is only present in the environment due to the natural weathering of mined ore and the degradation of contaminated products such as insulation, car brakes and clutches, and floor and ceiling tiles.

It is becoming clear that amphibole fibers that are not commercially available could also be carcinogenic. These are the fibres that do not form the tightly knit fibrils of the amphibole or serpentine minerals but instead are loose, flexible and needle-like. They can be found in mountains, sandstones, and cliffs from a variety of nations.

Asbestos may enter the environment in many ways, including through airborne particles. It can also be absorbed into water or soil. This can be due to both natural (weathering of asbestos-bearing rock) and anthropogenic sources (disintegration of asbestos-containing wastes as well as disposal in landfill sites). Asbestos contamination of surface and ground water is mostly due to natural weathering, but it has also been triggered by anthropogenic activities like mining and milling demolition and dispersal of asbestos-containing materials, and the removal of contaminated dumping ground in landfills (ATSDR, 2001). Asbestos fibres that are emitted from the air are the most significant cause of disease among those exposed to asbestos during their occupation.

Crocidolite

Exposure to asbestos through inhalation is the most common way people are exposed to the harmful fibres that can then be inhaled and cause serious health issues. Mesothelioma as well as asbestosis and other illnesses are all caused by asbestos fibres. Exposure to fibers can occur in different ways too, such as contact with contaminated clothing or construction materials. This kind of exposure is more dangerous when crocidolite (the blue form of asbestos) is involved. Crocidolite fibers are less dense and more fragile making them more palatable to inhale. They also can get deeper into lung tissue. It has been linked to more mesothelioma-related cases than other types of asbestos.

The six major types are chrysotile, amosite and chrysotile. The most common asbestos types are chrysotile and epoxiemite, which together make up the majority of commercial asbestos used. The other four have not been as extensively used however, they could be found in older buildings. They are less hazardous than chrysotile and amosite, but they may pose a danger when combined with other asbestos minerals or when mined in close proximity to other mineral deposits, such as vermiculite or talc.

Many studies have discovered an connection between asbestos exposure and stomach cancer. A number of studies have confirmed that asbestos exposure is linked to stomach. However there is no conclusive evidence. Some researchers have cited a SMR (standardized death ratio) of 1.5 (95 percent confidence interval: 0.7-3.6), for all asbestos workers, and others report an SMR of 1,24 (95% confidence interval: 0.76-2.5), for workers in chrysotile mills and mines.

IARC, the International Agency for Research on Cancer, has classified all forms of asbestos carcinogenic. All kinds of asbestos may cause mesothelioma and other health issues, however the risks differ based on the amount of exposure that people are exposed to, the type of asbestos involved as well as the length of their exposure and the method by which it is inhaled or ingested. The IARC has advised that avoid all forms of asbestos should be the highest priority since this is the best option for individuals. If you have been exposed in the past to asbestos and are suffering from respiratory issues or mesothelioma then you should talk to your doctor or NHS111.

Amphibole

Amphiboles are a collection of minerals that form prism-like or needle-like crystals. They are a type inosilicate mineral that is composed of double chains of SiO4 molecules. They usually have a monoclinic structure in their crystals, although some have an orthorhombic structure. The general formula of an amphibole is A0-1B2C5T8O22(OH,F)2. Double chains contain (Si, Al)O4 tetrahedrons linked together by tetrahedron rings made of six. The tetrahedrons can be separated by octahedral strips.

Amphiboles can be found in metamorphic and igneous rock. They are typically dark and hard. Due to their similarity of hardness and color, they may be difficult for some to differentiate from the pyroxenes. They also share a similar design of cleavage. Their chemistry allows a wide range of compositions. The various mineral groups in amphibole can be identified by their chemical compositions and crystal structures.

The five types of asbestos belonging to the amphibole family are amosite, anthophyllite as well as crocidolite and actinolite. Each variety of asbestos has its own distinctive properties. Crocidolite is the most hazardous asbestos type. It is made up of sharp fibers which are easily inhaled into the lung. Anthophyllite is yellowish to brown in color and is made up of iron and magnesium. This type of stone was once used in products such as cement and insulation materials.

Amphiboles can be difficult to study due to their complex chemical structure and the numerous substitutions. Therefore, a detailed analysis of their composition requires specialized techniques. EDS, WDS and XRD are the most common methods for identifying amphiboles. However, these methods can only give approximate identifications. For instance, these techniques can't distinguish between magnesio hastingsite and magnesio-hornblende. These techniques also don't distinguish between ferro-hornblende and.