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Arul Mylvaganam - One of the best experts on this subject based on the ideXlab platform.
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Radon Daughter exposures at the Radium Hill uranium mine and lung cancer rates among former workers, 1952–87
Cancer Causes & Control, 1991Co-Authors: Alistair Woodward, David Roder, Anthony J. Mcmichael, Philip Crouch, Arul MylvaganamAbstract:The aim of this historical (retrospective) cohort study was to investigate the relation between occupational exposure to Radon Daughters and subsequent mortality from lung cancer. Participants were former workers from the Radium Hill uranium mine, which operated in eastern South Australia from 1952 to 1961. A total of 2,574 workers were identified from mine records. Exposures to Radon Daughters were estimated from historical records of Radon gas concentrations in the mine and from individual job histories. Exposures of underground workers were low by comparison with other mines of that period (mean 7.0 Working Level Months [WLM], median 3.0 WLM). Thirty-six percent of the cohort could not be traced beyond the end of employment at Radium Hill. Among those traced to the end of 1987, lung cancer mortality was increased relative to the Australian national population of the period (Standardized Mortality Ratio = 194,95 percent confidence interval [CI]=142–245). Compared with surface workers, lung cancer mortality was markedly increased in the underground workers with Radon Daughter exposures>40 WLM (relative risk = 5.2, CI=1.8–15.1). From the available information, we conclude that this increase is unlikely tobe due to differences in smoking habits or other confounders. Taken together with the findings from other occupational studies, these results support current moves towards more stringent radiation control in the workplace, and underline the importance of research into the possible effects of domestic Radon exposures.
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Radon Daughter exposures at the radium hill uranium mine and lung cancer rates among former workers 1952 87
Cancer Causes & Control, 1991Co-Authors: Alistair Woodward, David Roder, Anthony J. Mcmichael, Philip Crouch, Arul MylvaganamAbstract:The aim of this historical (retrospective) cohort study was to investigate the relation between occupational exposure to Radon Daughters and subsequent mortality from lung cancer. Participants were former workers from the Radium Hill uranium mine, which operated in eastern South Australia from 1952 to 1961. A total of 2,574 workers were identified from mine records. Exposures to Radon Daughters were estimated from historical records of Radon gas concentrations in the mine and from individual job histories. Exposures of underground workers were low by comparison with other mines of that period (mean 7.0 Working Level Months [WLM], median 3.0 WLM). Thirty-six percent of the cohort could not be traced beyond the end of employment at Radium Hill. Among those traced to the end of 1987, lung cancer mortality was increased relative to the Australian national population of the period (Standardized Mortality Ratio = 194, 95 percent confidence interval [CI] = 142-245). Compared with surface workers, lung cancer mortality was markedly increased in the underground workers with Radon Daughter exposures greater than 40 WLM (relative risk = 5.2, CI = 1.8-15.1). From the available information, we conclude that this increase is unlikely to be due to differences in smoking habits or other confounders. Taken together with the findings from other occupational studies, these results support current moves towards more stringent radiation control in the workplace, and underline the importance of research into the possible effects of domestic Radon exposures.
Alistair Woodward - One of the best experts on this subject based on the ideXlab platform.
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Radon Daughter exposures at the Radium Hill uranium mine and lung cancer rates among former workers, 1952–87
Cancer Causes & Control, 1991Co-Authors: Alistair Woodward, David Roder, Anthony J. Mcmichael, Philip Crouch, Arul MylvaganamAbstract:The aim of this historical (retrospective) cohort study was to investigate the relation between occupational exposure to Radon Daughters and subsequent mortality from lung cancer. Participants were former workers from the Radium Hill uranium mine, which operated in eastern South Australia from 1952 to 1961. A total of 2,574 workers were identified from mine records. Exposures to Radon Daughters were estimated from historical records of Radon gas concentrations in the mine and from individual job histories. Exposures of underground workers were low by comparison with other mines of that period (mean 7.0 Working Level Months [WLM], median 3.0 WLM). Thirty-six percent of the cohort could not be traced beyond the end of employment at Radium Hill. Among those traced to the end of 1987, lung cancer mortality was increased relative to the Australian national population of the period (Standardized Mortality Ratio = 194,95 percent confidence interval [CI]=142–245). Compared with surface workers, lung cancer mortality was markedly increased in the underground workers with Radon Daughter exposures>40 WLM (relative risk = 5.2, CI=1.8–15.1). From the available information, we conclude that this increase is unlikely tobe due to differences in smoking habits or other confounders. Taken together with the findings from other occupational studies, these results support current moves towards more stringent radiation control in the workplace, and underline the importance of research into the possible effects of domestic Radon exposures.
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Radon Daughter exposures at the radium hill uranium mine and lung cancer rates among former workers 1952 87
Cancer Causes & Control, 1991Co-Authors: Alistair Woodward, David Roder, Anthony J. Mcmichael, Philip Crouch, Arul MylvaganamAbstract:The aim of this historical (retrospective) cohort study was to investigate the relation between occupational exposure to Radon Daughters and subsequent mortality from lung cancer. Participants were former workers from the Radium Hill uranium mine, which operated in eastern South Australia from 1952 to 1961. A total of 2,574 workers were identified from mine records. Exposures to Radon Daughters were estimated from historical records of Radon gas concentrations in the mine and from individual job histories. Exposures of underground workers were low by comparison with other mines of that period (mean 7.0 Working Level Months [WLM], median 3.0 WLM). Thirty-six percent of the cohort could not be traced beyond the end of employment at Radium Hill. Among those traced to the end of 1987, lung cancer mortality was increased relative to the Australian national population of the period (Standardized Mortality Ratio = 194, 95 percent confidence interval [CI] = 142-245). Compared with surface workers, lung cancer mortality was markedly increased in the underground workers with Radon Daughter exposures greater than 40 WLM (relative risk = 5.2, CI = 1.8-15.1). From the available information, we conclude that this increase is unlikely to be due to differences in smoking habits or other confounders. Taken together with the findings from other occupational studies, these results support current moves towards more stringent radiation control in the workplace, and underline the importance of research into the possible effects of domestic Radon exposures.
Y. Liu - One of the best experts on this subject based on the ideXlab platform.
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Measurements of the efficiency of respirator filters and filtering facepieces against Radon Daughter aerosols.
The Annals of occupational hygiene, 1992Co-Authors: D. Wake, R. C. Brown, R.a. Trottier, Y. LiuAbstract:The filtration efficiencies of respirator filters and filtering facepieces have been tested against Radon Daughters in a fluorspar mine. The test method involved the use of sampling filters exposed to natural Radon Daughters in air filtered by the test respirators. Respirators with a filtration efficiency high enough for them to be considered suitable for use against toxic dusts generally reduced Radon Daughter levels by 90% or more, though nuisance dust masks were ineffective. The measured penetration of Radon Daughters through the former types of filter correlated reasonably well with the penetration of 0.1 microns neutralized monodisperse aerosols, and with that of the BS 4400 sodium chloride aerosol, measured in the laboratory. To simulate exposure in working conditions mine air containing Radon Daughters was drawn through the test filters for 8 h, but their performance was not affected and they were not measurably radioactive as a result.
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Comparison of the efficiency of respirator filters and filtering facepieces against Radon Daughter aerosols and laboratory generated aerosols
Journal of Aerosol Science, 1992Co-Authors: D. Wake, R. C. Brown, R.a. Trottier, Y. LiuAbstract:Abstract Respirator filters and filtering facepieces have been tested for filtration efficiency against Radon Daughters in a flourspar mine. The test method involved the use of sampling filters exposed to natural Radon Daughters in air filtered by the test respirators. Respirators with a filtration efficiency high enough for them to be considered suitable for use against toxic dusts generally reduced Radon Daughter levels by 90% or more, though nuisance dust masks were ineffective. The measured penetration of Radon Daughters through the former types of filter correlated reasonably well with the penetration of 0.1μm neutralised monodisperse aerosol and with that of the BS4400 sodium chloride aerosol, measured in the laboratory. Test filters were exposed to Radon Daughters in the mine for 8 hours as a simulation of their behaviour during a working shift, but their performance was not altered by this and they did not show measurable radioactivity as a result of it.
David Roder - One of the best experts on this subject based on the ideXlab platform.
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Radon Daughter exposures at the Radium Hill uranium mine and lung cancer rates among former workers, 1952–87
Cancer Causes & Control, 1991Co-Authors: Alistair Woodward, David Roder, Anthony J. Mcmichael, Philip Crouch, Arul MylvaganamAbstract:The aim of this historical (retrospective) cohort study was to investigate the relation between occupational exposure to Radon Daughters and subsequent mortality from lung cancer. Participants were former workers from the Radium Hill uranium mine, which operated in eastern South Australia from 1952 to 1961. A total of 2,574 workers were identified from mine records. Exposures to Radon Daughters were estimated from historical records of Radon gas concentrations in the mine and from individual job histories. Exposures of underground workers were low by comparison with other mines of that period (mean 7.0 Working Level Months [WLM], median 3.0 WLM). Thirty-six percent of the cohort could not be traced beyond the end of employment at Radium Hill. Among those traced to the end of 1987, lung cancer mortality was increased relative to the Australian national population of the period (Standardized Mortality Ratio = 194,95 percent confidence interval [CI]=142–245). Compared with surface workers, lung cancer mortality was markedly increased in the underground workers with Radon Daughter exposures>40 WLM (relative risk = 5.2, CI=1.8–15.1). From the available information, we conclude that this increase is unlikely tobe due to differences in smoking habits or other confounders. Taken together with the findings from other occupational studies, these results support current moves towards more stringent radiation control in the workplace, and underline the importance of research into the possible effects of domestic Radon exposures.
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Radon Daughter exposures at the radium hill uranium mine and lung cancer rates among former workers 1952 87
Cancer Causes & Control, 1991Co-Authors: Alistair Woodward, David Roder, Anthony J. Mcmichael, Philip Crouch, Arul MylvaganamAbstract:The aim of this historical (retrospective) cohort study was to investigate the relation between occupational exposure to Radon Daughters and subsequent mortality from lung cancer. Participants were former workers from the Radium Hill uranium mine, which operated in eastern South Australia from 1952 to 1961. A total of 2,574 workers were identified from mine records. Exposures to Radon Daughters were estimated from historical records of Radon gas concentrations in the mine and from individual job histories. Exposures of underground workers were low by comparison with other mines of that period (mean 7.0 Working Level Months [WLM], median 3.0 WLM). Thirty-six percent of the cohort could not be traced beyond the end of employment at Radium Hill. Among those traced to the end of 1987, lung cancer mortality was increased relative to the Australian national population of the period (Standardized Mortality Ratio = 194, 95 percent confidence interval [CI] = 142-245). Compared with surface workers, lung cancer mortality was markedly increased in the underground workers with Radon Daughter exposures greater than 40 WLM (relative risk = 5.2, CI = 1.8-15.1). From the available information, we conclude that this increase is unlikely to be due to differences in smoking habits or other confounders. Taken together with the findings from other occupational studies, these results support current moves towards more stringent radiation control in the workplace, and underline the importance of research into the possible effects of domestic Radon exposures.
Anthony J. Mcmichael - One of the best experts on this subject based on the ideXlab platform.
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Radon Daughter exposures at the Radium Hill uranium mine and lung cancer rates among former workers, 1952–87
Cancer Causes & Control, 1991Co-Authors: Alistair Woodward, David Roder, Anthony J. Mcmichael, Philip Crouch, Arul MylvaganamAbstract:The aim of this historical (retrospective) cohort study was to investigate the relation between occupational exposure to Radon Daughters and subsequent mortality from lung cancer. Participants were former workers from the Radium Hill uranium mine, which operated in eastern South Australia from 1952 to 1961. A total of 2,574 workers were identified from mine records. Exposures to Radon Daughters were estimated from historical records of Radon gas concentrations in the mine and from individual job histories. Exposures of underground workers were low by comparison with other mines of that period (mean 7.0 Working Level Months [WLM], median 3.0 WLM). Thirty-six percent of the cohort could not be traced beyond the end of employment at Radium Hill. Among those traced to the end of 1987, lung cancer mortality was increased relative to the Australian national population of the period (Standardized Mortality Ratio = 194,95 percent confidence interval [CI]=142–245). Compared with surface workers, lung cancer mortality was markedly increased in the underground workers with Radon Daughter exposures>40 WLM (relative risk = 5.2, CI=1.8–15.1). From the available information, we conclude that this increase is unlikely tobe due to differences in smoking habits or other confounders. Taken together with the findings from other occupational studies, these results support current moves towards more stringent radiation control in the workplace, and underline the importance of research into the possible effects of domestic Radon exposures.
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Radon Daughter exposures at the radium hill uranium mine and lung cancer rates among former workers 1952 87
Cancer Causes & Control, 1991Co-Authors: Alistair Woodward, David Roder, Anthony J. Mcmichael, Philip Crouch, Arul MylvaganamAbstract:The aim of this historical (retrospective) cohort study was to investigate the relation between occupational exposure to Radon Daughters and subsequent mortality from lung cancer. Participants were former workers from the Radium Hill uranium mine, which operated in eastern South Australia from 1952 to 1961. A total of 2,574 workers were identified from mine records. Exposures to Radon Daughters were estimated from historical records of Radon gas concentrations in the mine and from individual job histories. Exposures of underground workers were low by comparison with other mines of that period (mean 7.0 Working Level Months [WLM], median 3.0 WLM). Thirty-six percent of the cohort could not be traced beyond the end of employment at Radium Hill. Among those traced to the end of 1987, lung cancer mortality was increased relative to the Australian national population of the period (Standardized Mortality Ratio = 194, 95 percent confidence interval [CI] = 142-245). Compared with surface workers, lung cancer mortality was markedly increased in the underground workers with Radon Daughter exposures greater than 40 WLM (relative risk = 5.2, CI = 1.8-15.1). From the available information, we conclude that this increase is unlikely to be due to differences in smoking habits or other confounders. Taken together with the findings from other occupational studies, these results support current moves towards more stringent radiation control in the workplace, and underline the importance of research into the possible effects of domestic Radon exposures.