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The Dangers of Exposure to Asbestos

Before it was banned asbestos was still used in a variety of commercial products. According to studies, exposure to asbestos can cause cancer as well as other health issues.

It is not possible to tell by simply looking at something if it is made of asbestos. Neither can you taste or smell it. Asbestos is only detectable when the materials that contain it are broken or drilled.

Chrysotile

At its height, chrysotile comprised the majority of the asbestos production. It was widely used in industries, including construction insulation, fireproofing and insulation. In the event that workers were exposed for long periods to this toxic material, they could contract mesothelioma as well as other asbestos related diseases. Since the 1960s, when mesothelioma was first becoming a concern asbestos use has declined significantly. It is still found in many products we use today.

Chrysotile can be used in a safe manner in the event that a thorough safety and handling plan is put in place. It has been discovered that at the current controlled exposure levels, there is no undue risk to the workers working with the substance. The inhalation of airborne particles is strongly linked to lung fibrosis and lung cancer. This has been proven for intensity (dose) as in the time of exposure.

In one study mortality rates were compared between a manufacturing facility which used almost exclusively chlorosotile to make friction materials and the national death rate. The study revealed that after 40 years of processing low levels of chrysotile, there was no significant rise in mortality at this factory.

In contrast to other forms of asbestos, chrysotile fibres tend to be shorter. They can penetrate the lungs and enter the bloodstream. They are more likely to cause health issues than fibres that are longer.

When chrysotile is mixed with cement, it is extremely difficult for the fibres to be airborne and pose health risks. Fibre cement products have been extensively used all over the world particularly in buildings like hospitals and schools.

Research has shown that amphibole asbestos such as amosite, crocidolite, or crocidolite, is less likely than chrysotile to cause diseases. These amphibole kinds have been the main source of mesothelioma, as well as other asbestos-related diseases. When chrysotile gets mixed with cement, it creates a strong, flexible construction product that is able to withstand severe conditions in the weather and other environmental hazards. It is also easy to clean after use. Asbestos fibers can be easily removed by a professional and disposed of.

Amosite

Asbestos is one of the groups of fibrous silicates that are found in various types of rock formations. It is classified into six groups that include amphibole (serpentine), tremolite (tremolite), anthophyllite (crocidolite) and anthophyllite.

Asbestos minerals are made up of long, thin fibres that range in length from very fine to wide and straight to curled. They are found in nature as individual fibrils, or as bundles that have splaying ends, referred to as a fibril matrix. Asbestos minerals can also be found in the form of a powder (talc) or mixed with other minerals and sold as talcum powder and vermiculite that are widely used in consumer products, such as baby powder, face powder and cosmetics.

Asbestos was used extensively in the early two-thirds of the 20th century to construct shipbuilding insulation, fireproofing and other construction materials. The majority of occupational exposures involved asbestos fibres in the air, however certain workers were exposed to toxic talc or vermiculite and to pieces of asbestos-bearing rock (ATSDR 2001). Exposures varied from industry to industry, era to and even geographical location.

Exposure to asbestos in the workplace is usually because of inhalation. However there have been instances of workers being exposed via skin contact or eating food that is contaminated. asbestos attorney can be found in the environment because of natural weathering and degrading of products that are contaminated like ceiling and floor tiles as well as car brakes and clutches, and insulation.

There is emerging evidence that non-commercial amphibole fibers could also be carcinogenic. These are the fibres that don't form the tightly weaved fibrils of amphibole and serpentine minerals, but instead are loose, flexible and needle-like. These fibers can be found in mountains, sandstones, and cliffs of a variety of countries.

Asbestos is able to enter the environment in a variety of ways, including in the form of airborne particles. It can also be released into water or soil. This can be caused by both natural (weathering of asbestos-bearing rocks) and anthropogenic causes (disintegration of asbestos-containing wastes and disposal in landfill sites). Asbestos contamination in surface and ground waters is primarily due to natural weathering. However it is also caused by anthropogeny, such as through the mining and milling of asbestos-containing materials demolition and dispersal and the disposal of contaminated dumping materials in landfills (ATSDR 2001). Inhalation exposure to airborne asbestos fibres is the most common reason for illness among those exposed to asbestos in the workplace.

Crocidolite

Exposure to asbestos through inhalation is the most popular way people are exposed to the harmful fibres. They can then be inhaled and cause serious health problems. These include mesothelioma and asbestosis. Exposure to the fibres can occur in different ways, like contact with contaminated clothes or building materials. This kind of exposure is more hazardous when crocidolite (the blue form of asbestos) is involved. Crocidolite is a smaller, more fragile fibers that are more easy to breathe in and can get deeper into lung tissue. It has been linked to a higher number of mesothelioma related cases than any other form of asbestos.

The six major types of asbestos are chrysotile, amosite as well as epoxiemite. Tremolite is anthophyllite, and actinolite. Amosite and chrysotile are the most commonly used types of asbestos. They comprise 95 percent of all commercial asbestos that is used. The other four asbestos types aren't as well-known, but can still be present in older structures. They are not as dangerous as amosite or chrysotile however they could still be dangerous when mixed with other minerals, or when mined near other naturally occurring mineral deposits like talc and vermiculite.

Many studies have discovered an association between asbestos exposure and stomach cancer. A number of studies have confirmed that asbestos exposure is linked to stomach. The evidence isn't unanimous. Certain researchers have reported an SMR (standardized mortality ratio) of 1.5 (95% of the time CI: 0.7-3.6) for all asbestos-related workers while other studies have reported an SMR of 1.24 (95 percent of the CI = 0.76-2.5) for those who work in chrysotile mines and mills.

IARC The IARC, which is the International Agency for Research on Cancer, has classified all kinds of asbestos carcinogenic. All asbestos types can cause mesothelioma, however, the risk is dependent on how much exposure is taken, what type of asbestos is involved and how long the exposure lasts. IARC has stated that the best option for people is to avoid all forms of asbestos. However, if a person has been exposed to asbestos in the past and suffer from a disease such as mesothelioma or any other respiratory diseases it is recommended that they seek advice from their doctor or NHS 111.

Amphibole

Amphiboles are a collection of minerals that may form prism-like or needle-like crystals. They are a type of silicate mineral that is composed of double chains of molecules of SiO4. They usually possess a monoclinic crystal system however some may have an orthorhombic structure. The general formula of an amphibole is A0-1B2C5T8O22(OH,F)2. The double chains are made up of (Si,Al)O4 Tetrahedrons, which are connected in rings of six. Tetrahedrons may be separated by strips of octahedral site.

Amphiboles are present in metamorphic and igneous rock. They are typically dark-colored and are hard. Due to their similarity in strength and colour, they can be difficult for some people to differentiate from the pyroxenes. They also share a similar cleavage pattern. Their chemistry allows a wide range of compositions. The chemical compositions and crystal structure of the various mineral groups in amphibole could be used to determine their composition.

Amphibole asbestos consists of chrysotile, and the five types of asbestos amosite anthophyllite (crocidolite), amosite (actinolite) and amosite. Each type of asbestos comes with distinct characteristics. Crocidolite is among the most dangerous asbestos type. It has sharp fibers that are easily inhaled into the lung. Anthophyllite is a brownish to yellowish color and is composed mostly of iron and Asbestos Attorney magnesium. This kind of stone was used to create cement and insulation materials.

Amphibole minerals are hard to analyze because they have complex chemical structures and many substitutions. Therefore, a detailed analysis of their composition requires special methods. EDS, WDS and XRD are the most common methods for identifying amphiboles. However, these methods only provide approximate identifications. For instance, these techniques are unable to distinguish between magnesio-hastingsite from magnesio-hornblende. These techniques also cannot distinguish between ferro-hornblende and pargasite.