Coal Workers Pneumoconiosis and Related Risk Indices
Cross sectional epidemiological studies were carried out in three coal mines (Mines A, B and C), that produce differnt types of coal in order to examine the relationship between the prevalence of coal workers pneumoconiosis (CWP) and factors contributing to the development and seriousness of CWP. Se...
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| Veröffentlicht in: | Journal of Occupational Health 1996-04, Vol.38 (2), p.82-88 |
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| creator | Niu, Qiao Liu, Tianwang Li, Tang Tang, Hanchao Bai, Yuanping Gao, Tianshu |
| description | Cross sectional epidemiological studies were carried out in three coal mines (Mines A, B and C), that produce differnt types of coal in order to examine the relationship between the prevalence of coal workers pneumoconiosis (CWP) and factors contributing to the development and seriousness of CWP. Seven factors were taken into consideration and two of them were calculated as "risk indices". They concerned composition (including carbon, ash, volatile content of coal, free silica in coal dust and rock dust) and exposure factors (including dust concentration, duration of exposure and type of operation). Composition factors were：carbon 90%, ash 23.13%, volatile content 13.85%, free silica in coal dusts 2.58% and free silica in rock dusts 32.88% in Mine A. Carbon 82%, ash 8%, volatile content 28.5%, free silica in coal dusts 5.90% and free silica in rock dusts 33.0% in Mine B. Carbon 94%, ash 20.46%, volatile content 10.76%, free silica in coal dusts 2.04% and free silica in rock dusts 24.04% in Mine C. Differences in the coal dust concentration over a period of 20 to 30 years were not significant in the three mines. The rock dust concentration in Mine B was much higher than those in the other two mines. The CWP prevalence was 2.22% in Mine A, 13.20% in Mine B and 1.86% in Mine C. Analysis has shown that both composition and exposure factors were related to CWP prevalence, but the strength of the relationship between the factors was different in the three mines, especially in Mine B, where there was a high CWP prevalence, and the association of CWP with free silica and high volatile content was strong. It was interesting that, though the rank of coal in Mine B was much lower than those in Mine A and Mine C, the prevalence of CWP in Mine B was much higher than those in Mine A and Mine C. This result was in contrast with those reported before. The calculation of risk indices indicated that there was a positive correlation between the risk indices and exposure duration. |
| doi_str_mv | 10.1539/joh.38.82 |
| format | Article |
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Seven factors were taken into consideration and two of them were calculated as "risk indices". They concerned composition (including carbon, ash, volatile content of coal, free silica in coal dust and rock dust) and exposure factors (including dust concentration, duration of exposure and type of operation). Composition factors were：carbon 90%, ash 23.13%, volatile content 13.85%, free silica in coal dusts 2.58% and free silica in rock dusts 32.88% in Mine A. Carbon 82%, ash 8%, volatile content 28.5%, free silica in coal dusts 5.90% and free silica in rock dusts 33.0% in Mine B. Carbon 94%, ash 20.46%, volatile content 10.76%, free silica in coal dusts 2.04% and free silica in rock dusts 24.04% in Mine C. Differences in the coal dust concentration over a period of 20 to 30 years were not significant in the three mines. The rock dust concentration in Mine B was much higher than those in the other two mines. The CWP prevalence was 2.22% in Mine A, 13.20% in Mine B and 1.86% in Mine C. Analysis has shown that both composition and exposure factors were related to CWP prevalence, but the strength of the relationship between the factors was different in the three mines, especially in Mine B, where there was a high CWP prevalence, and the association of CWP with free silica and high volatile content was strong. It was interesting that, though the rank of coal in Mine B was much lower than those in Mine A and Mine C, the prevalence of CWP in Mine B was much higher than those in Mine A and Mine C. This result was in contrast with those reported before. The calculation of risk indices indicated that there was a positive correlation between the risk indices and exposure duration.</description><identifier>ISSN: 1341-9145</identifier><identifier>ISSN: 1348-9585</identifier><identifier>EISSN: 1348-9585</identifier><identifier>DOI: 10.1539/joh.38.82</identifier><language>eng</language><publisher>Tokyo: JAPAN SOCIETY FOR OCCUPATIONAL HEALTH</publisher><subject>Carbon ; Coal mines ; Coal mining ; Coal workers’ pneumoconiosis ; Dust ; Free silica ; Mines ; Occupational health ; Pneumoconiosis ; Public health ; Risk index ; Rocks ; Silica ; Volatile content</subject><ispartof>Journal of Occupational Health, 1996-04, Vol.38 (2), p.82-88</ispartof><rights>1996 Japan Society for Occupational Health</rights><rights>Copyright Japan Science and Technology Agency 1996</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c4618-2c14600d0e8ec49861a893f179558c6a5b5de76bfa0c02a723a9b5543d1974b33</citedby><cites>FETCH-LOGICAL-c4618-2c14600d0e8ec49861a893f179558c6a5b5de76bfa0c02a723a9b5543d1974b33</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://onlinelibrary.wiley.com/doi/pdf/10.1539%2Fjoh.38.82$$EPDF$$P50$$Gwiley$$H</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1539%2Fjoh.38.82$$EHTML$$P50$$Gwiley$$H</linktohtml><link.rule.ids>314,776,780,1411,27901,27902,45550,45551</link.rule.ids></links><search><creatorcontrib>Niu, Qiao</creatorcontrib><creatorcontrib>Liu, Tianwang</creatorcontrib><creatorcontrib>Li, Tang</creatorcontrib><creatorcontrib>Tang, Hanchao</creatorcontrib><creatorcontrib>Bai, Yuanping</creatorcontrib><creatorcontrib>Gao, Tianshu</creatorcontrib><creatorcontrib>Shanxi Medical College</creatorcontrib><creatorcontrib>Institute of Occupational Medicine of Datong</creatorcontrib><creatorcontrib>Department of Public Health</creatorcontrib><creatorcontrib>Coal Industry Administration of Shanxi Province</creatorcontrib><title>Coal Workers Pneumoconiosis and Related Risk Indices</title><title>Journal of Occupational Health</title><description>Cross sectional epidemiological studies were carried out in three coal mines (Mines A, B and C), that produce differnt types of coal in order to examine the relationship between the prevalence of coal workers pneumoconiosis (CWP) and factors contributing to the development and seriousness of CWP. Seven factors were taken into consideration and two of them were calculated as "risk indices". They concerned composition (including carbon, ash, volatile content of coal, free silica in coal dust and rock dust) and exposure factors (including dust concentration, duration of exposure and type of operation). Composition factors were：carbon 90%, ash 23.13%, volatile content 13.85%, free silica in coal dusts 2.58% and free silica in rock dusts 32.88% in Mine A. Carbon 82%, ash 8%, volatile content 28.5%, free silica in coal dusts 5.90% and free silica in rock dusts 33.0% in Mine B. Carbon 94%, ash 20.46%, volatile content 10.76%, free silica in coal dusts 2.04% and free silica in rock dusts 24.04% in Mine C. Differences in the coal dust concentration over a period of 20 to 30 years were not significant in the three mines. The rock dust concentration in Mine B was much higher than those in the other two mines. The CWP prevalence was 2.22% in Mine A, 13.20% in Mine B and 1.86% in Mine C. Analysis has shown that both composition and exposure factors were related to CWP prevalence, but the strength of the relationship between the factors was different in the three mines, especially in Mine B, where there was a high CWP prevalence, and the association of CWP with free silica and high volatile content was strong. It was interesting that, though the rank of coal in Mine B was much lower than those in Mine A and Mine C, the prevalence of CWP in Mine B was much higher than those in Mine A and Mine C. This result was in contrast with those reported before. The calculation of risk indices indicated that there was a positive correlation between the risk indices and exposure duration.</description><subject>Carbon</subject><subject>Coal mines</subject><subject>Coal mining</subject><subject>Coal workers’ pneumoconiosis</subject><subject>Dust</subject><subject>Free silica</subject><subject>Mines</subject><subject>Occupational health</subject><subject>Pneumoconiosis</subject><subject>Public health</subject><subject>Risk index</subject><subject>Rocks</subject><subject>Silica</subject><subject>Volatile content</subject><issn>1341-9145</issn><issn>1348-9585</issn><issn>1348-9585</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1996</creationdate><recordtype>article</recordtype><recordid>eNp1kEtLAzEUhYMoWGoX_oMBVy6m5uY1yVKKtZVCRRSXIZPJ0LTTSZ20SP-9aUdw5eJyzuI794XQLeAxcKoe1mE1pnIsyQUaAGUyV1zyy7OHXAHj12gUoy8xocALEHSA2CSYJvsM3cZ1MXtt3WEbbGh9iD5mpq2yN9eYvUvq4yabt5W3Lt6gq9o00Y1-dYg-pk_vk1m-WD7PJ4-L3DIBMicWmMC4wk46y5QUYKSiNRSKc2mF4SWvXCHK2mCLiSkINarknNEKVMFKSoforu-768LXwcW9XodD16aRGhij6QKhTtR9T9kuxNi5Wu86vzXdUQPWp7-k1EpTqSVJLOvZb9-44_-gflnOCKYSY4KxTLFpH9u69ADThLbxrfvbxtbF2WtQSmh8CpIk8lRnI4FiApj-AACfeWU</recordid><startdate>199604</startdate><enddate>199604</enddate><creator>Niu, Qiao</creator><creator>Liu, Tianwang</creator><creator>Li, Tang</creator><creator>Tang, Hanchao</creator><creator>Bai, Yuanping</creator><creator>Gao, Tianshu</creator><general>JAPAN SOCIETY FOR OCCUPATIONAL HEALTH</general><general>John Wiley & Sons, Inc</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7T2</scope><scope>7TA</scope><scope>7TB</scope><scope>7U7</scope><scope>8FD</scope><scope>C1K</scope><scope>FR3</scope><scope>JG9</scope><scope>KR7</scope><scope>NAPCQ</scope></search><sort><creationdate>199604</creationdate><title>Coal Workers Pneumoconiosis and Related Risk Indices</title><author>Niu, Qiao ; Liu, Tianwang ; Li, Tang ; Tang, Hanchao ; Bai, Yuanping ; Gao, Tianshu</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c4618-2c14600d0e8ec49861a893f179558c6a5b5de76bfa0c02a723a9b5543d1974b33</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1996</creationdate><topic>Carbon</topic><topic>Coal mines</topic><topic>Coal mining</topic><topic>Coal workers’ pneumoconiosis</topic><topic>Dust</topic><topic>Free silica</topic><topic>Mines</topic><topic>Occupational health</topic><topic>Pneumoconiosis</topic><topic>Public health</topic><topic>Risk index</topic><topic>Rocks</topic><topic>Silica</topic><topic>Volatile content</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Niu, Qiao</creatorcontrib><creatorcontrib>Liu, Tianwang</creatorcontrib><creatorcontrib>Li, Tang</creatorcontrib><creatorcontrib>Tang, Hanchao</creatorcontrib><creatorcontrib>Bai, Yuanping</creatorcontrib><creatorcontrib>Gao, Tianshu</creatorcontrib><creatorcontrib>Shanxi Medical College</creatorcontrib><creatorcontrib>Institute of Occupational Medicine of Datong</creatorcontrib><creatorcontrib>Department of Public Health</creatorcontrib><creatorcontrib>Coal Industry Administration of Shanxi Province</creatorcontrib><collection>CrossRef</collection><collection>Health and Safety Science Abstracts (Full archive)</collection><collection>Materials Business File</collection><collection>Mechanical & Transportation Engineering Abstracts</collection><collection>Toxicology Abstracts</collection><collection>Technology Research Database</collection><collection>Environmental Sciences and Pollution Management</collection><collection>Engineering Research Database</collection><collection>Materials Research Database</collection><collection>Civil Engineering Abstracts</collection><collection>Nursing & Allied Health Premium</collection><jtitle>Journal of Occupational Health</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Niu, Qiao</au><au>Liu, Tianwang</au><au>Li, Tang</au><au>Tang, Hanchao</au><au>Bai, Yuanping</au><au>Gao, Tianshu</au><aucorp>Shanxi Medical College</aucorp><aucorp>Institute of Occupational Medicine of Datong</aucorp><aucorp>Department of Public Health</aucorp><aucorp>Coal Industry Administration of Shanxi Province</aucorp><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Coal Workers Pneumoconiosis and Related Risk Indices</atitle><jtitle>Journal of Occupational Health</jtitle><date>1996-04</date><risdate>1996</risdate><volume>38</volume><issue>2</issue><spage>82</spage><epage>88</epage><pages>82-88</pages><issn>1341-9145</issn><issn>1348-9585</issn><eissn>1348-9585</eissn><abstract>Cross sectional epidemiological studies were carried out in three coal mines (Mines A, B and C), that produce differnt types of coal in order to examine the relationship between the prevalence of coal workers pneumoconiosis (CWP) and factors contributing to the development and seriousness of CWP. Seven factors were taken into consideration and two of them were calculated as "risk indices". They concerned composition (including carbon, ash, volatile content of coal, free silica in coal dust and rock dust) and exposure factors (including dust concentration, duration of exposure and type of operation). Composition factors were：carbon 90%, ash 23.13%, volatile content 13.85%, free silica in coal dusts 2.58% and free silica in rock dusts 32.88% in Mine A. Carbon 82%, ash 8%, volatile content 28.5%, free silica in coal dusts 5.90% and free silica in rock dusts 33.0% in Mine B. Carbon 94%, ash 20.46%, volatile content 10.76%, free silica in coal dusts 2.04% and free silica in rock dusts 24.04% in Mine C. Differences in the coal dust concentration over a period of 20 to 30 years were not significant in the three mines. The rock dust concentration in Mine B was much higher than those in the other two mines. The CWP prevalence was 2.22% in Mine A, 13.20% in Mine B and 1.86% in Mine C. Analysis has shown that both composition and exposure factors were related to CWP prevalence, but the strength of the relationship between the factors was different in the three mines, especially in Mine B, where there was a high CWP prevalence, and the association of CWP with free silica and high volatile content was strong. It was interesting that, though the rank of coal in Mine B was much lower than those in Mine A and Mine C, the prevalence of CWP in Mine B was much higher than those in Mine A and Mine C. This result was in contrast with those reported before. The calculation of risk indices indicated that there was a positive correlation between the risk indices and exposure duration.</abstract><cop>Tokyo</cop><pub>JAPAN SOCIETY FOR OCCUPATIONAL HEALTH</pub><doi>10.1539/joh.38.82</doi><tpages>7</tpages><oa>free_for_read</oa></addata></record> |
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| subjects | Carbon Coal mines Coal mining Coal workers’ pneumoconiosis Dust Free silica Mines Occupational health Pneumoconiosis Public health Risk index Rocks Silica Volatile content |
| title | Coal Workers Pneumoconiosis and Related Risk Indices |
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