Cement Workers Asbestos Fiber Concentrations and Mortality Rates

It has been shown that inhalation of asbestos fibers can lead to various health problems ranging from asthma to cancer. Another interesting study investigating the rate of mesothelioma in asbestos-cement factory is called "Follow up study of workers manufacturing chrysotile asbestos-cement products.". By Gardner MJ, Winter PD, Pannett B, Powell CA - British Journal of Industrial Medicine 1986, 43:726-732 Here is an excerpt: "cohort study conducted from 2167 respondents employed between 1941 and 1983 natvornica asbestos cement in England. The production process incorporated the use of chrysotile asbestos fibers, except for small amounts of amosite for four months 1976th concentrations of airborne fibers available since 1970 from a personal sampling showed average levels below 1 fiber / ml, although higher levels probably occurred earlier in certain areas of the factory. No excess of lung cancer was observed in mortality observed in the comparison with either national or local mortality, and the subgroup analysis of labor for the job, the level of exposure, duration of employment, duration of the entry, or calendar year of employment is not a real proposal for asbestos-related excess this cause of death. There was one death from pleural mesothelioma and one with asbestosis was mentioned as a cause linked to death certificates, but none is considered to be associated with asbestos exposure in this factory. Other proposed asbestos-related cancers, such as the pharynx and gastrointestinal, showed no raised risk. Although the duration of exposure were short in this study, the results are consistent with two other studies of workers exposed to low concentrations of chrysotile asbestos fibers in the manufacture of cement products, which have been reported excess mortality ."

Another interesting study entitled "Respiratory function changes after asbestos pleurisy." . By Wright PH, Hanson, L Kreel, LH Capel - Thorax 1980; 35:31-36 Here is an excerpt: "Abstract - Six patients with radiological evidence of diffuse pleural thickening after industrial asbestos exposure are described in five. Computed tomography of the chest. All scan showed marked circumferential pleural thickening often with calcification, and four showed no significant evidence of intrapulmonary fibrosis (asbestosis). pulmonary function testing showed a decrease in inspiratory capacity and single breath carbon monoxide transfer factor (TLCO). transfer coefficient, calculated as TLCO divided alveolar volume determined by helium dilution during the measurement TLCO, was increased.

Pseudo-static compliance curves showed significantly more negative intrapleural pressures at all lung quantities than are found in normal people. These results suggest that the circumferential pleural thickening was preventing normal lung expansion despite the unusually high distending pritisaka.Uzorak tests of lung function is sufficiently distinctive for it to be recognized in clinical practice, and suggests that the lungs are kept firmly within pleura.Pleural abnormal thickening in our May patients are related to the condition described as "benign asbestos pleurisy" and not interstitial fibrosis of asbestosis ."

Another interesting study entitled "Cancer in the use of amosite asbestos factory" by MJ Gardner, PD Winter and Bennett C. Cancer in a factory using amosite asbestos. International Journal of Epidemiology 1984: 13:. 3-10 Here is an excerpt: "The paper describes the mortality experience of 5969 people employed in the factory where the insulation board is made amosite asbestos from 1947 to 1979 422 (. 7%) than men were known to have died by the end of 1980 among 4820 people participated in the production insulating panels doubling the risk of lung cancer occurred (57 deaths observed; .. 29 deaths expected) excess is present in men who entered the factory before and after 1960. Among the 2461 for which smoking information available to detect the increased risk is limited in current smokers exposed to high levels of asbestos. in five deaths from mesothelioma has a large and statistically significant excess mortality from cancer and other places have taken place, but further follow-up group is underway. nine of the deaths from asbestosis were recorded. The results are discussed in light of other studies on the effects of exposure to amosite asbestos. "

If you find any of these statements interesting, please read the study in its entirety. We all owe a great debt to these researchers is an important job.