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Asbestos (/ æ s ˈ b ɛ s t ə s, æ z-,-t ɒ s / ass-BES-təs, az-, -toss) [1] is a group of naturally occurring, toxic, carcinogenic and fibrous silicate minerals.There are six types, all of which are composed of long and thin fibrous crystals, each fibre (particulate with length substantially greater than width) [2] being composed of many microscopic "fibrils" that can be released into ...
Amosite and crocidolite are considered the most hazardous asbestos fiber types; [5] however, chrysotile asbestos has also produced tumors in animals and is a recognized cause of asbestosis and malignant mesothelioma in humans, [6] and mesothelioma has been observed in people who were occupationally exposed to chrysotile, family members of the ...
The first lawsuits against asbestos manufacturers occurred in 1929. Since then, many lawsuits have been filed against asbestos manufacturers and employers, for neglecting to implement safety measures after the link between asbestos, asbestosis and mesothelioma became known (some reports seem to place this as early as 1898 in modern times). The ...
Asbestos-related diseases are disorders of the lung and pleura caused by the inhalation of asbestos fibres. Asbestos-related diseases include non-malignant disorders such as asbestosis (pulmonary fibrosis due to asbestos), diffuse pleural thickening, pleural plaques, pleural effusion, rounded atelectasis and malignancies such as lung cancer and malignant mesothelioma.
J. W. Roberts Ltd. was founded in Armley in 1874 as a textile producer, primarily working with cotton, hemp and jute.By 1906, its factory on Canal Road, known as the Midland Works, specialised in the manufacture of asbestos insulation mattresses for steam locomotive boilers and is believed to have been one of only two factories in the world at the time which processed blue asbestos. [3]
The U.S. Environmental Protection Agency on Monday finalized a rule that would ban using and importing cancer-causing asbestos, a material still used in some vehicles and in some industrial ...
Toxic: a chemical that has a median lethal concentration (LC 50) in air of more than 200 parts per million (ppm) but not more than 2,000 parts per million by volume of gas or vapor, or more than 2 milligrams per liter but not more than 20 milligrams per liter of mist, fume or dust, when administered by continuous inhalation for 1 hour (or less if death occurs within 1 hour) to albino rats ...
Burned residential areas may contain silica dust, asbestos, metals, or polyaromatic hydrocarbons. Additional health hazards of fire debris cleanup work may include carbon monoxide and hazardous liquids [2] Silica, or silicon dioxide, can occur in a crystalline or noncrystalline (amorphous) form. In fire debris, silica can be found in concrete ...