Respirable dust weight concentration and quartz concentration in respirable dust weight concentration in Taeback and Kangneung collieries.
Authors
Cheon H; Chou C; Yoon N; Kim J
Source
Proceedings of the VIIth International Pneumoconioses Conference, August 23-26, 1988, Pittsburgh, Pennsylvania, USA. Atlanta, GA: U.S. Department of Health and Human Services, Public Health Service, Centers for Disease Control, National Institute for Occupational Safety and Health, DHHS (NIOSH) Publication No. 90-108, 1990 Nov; (Part II):1229-1233
The concentrations of respirable and their quartz (14808607) content in two Korean coal mines were determined. Environmental and breathing zone samples were collected at the coal faces and drilling sites in the Taeback and Kangneung coal mines, South Korea. The mass concentrations of the respirable dust fractions were determined gravimetrically. The quartz content of the samples was determined by Fourier transform infrared spectrophotometry. The respirable dust concentration data were skewed to the right. After a logarithmic transformation the data were normally distributed. The geometric mean respirable dust concentrations at the drilling sites and coal face of the Taeback mine were 1.34 and 2.55mg/m3, respectively. At the Kangneung mine the corresponding concentrations were 2.44 and 4.24mg/m3. The geometric mean quartz concentrations at the drilling sites and coal face of the Taeback mine were 4.24 and 1.39%, respectively. The corresponding values for the Kangneung mine were 2.55 and 1.24%. The overall dust and quartz concentrations at the two mines did not differ significantly from each other. The differences in dust and quartz concentration between the drilling sites and coal face at either mine were statistically significant. The authors conclude that many of the respirable dust concentrations exceed the American Conference of Governmental Industrial Hygienists standard of 2mg/m3. The high concentrations of respirable coal dust at the two mines may reflect in part the nature of the coal seams, thin crumbly anthracite, in South Korea. The differences in dust and quartz concentration between the drilling sites and coal face may reflect differences in drilling techniques.
Links with this icon indicate that you are leaving the CDC website.
The Centers for Disease Control and Prevention (CDC) cannot attest to the accuracy of a non-federal website.
Linking to a non-federal website does not constitute an endorsement by CDC or any of its employees of the sponsors or the information and products presented on the website.
You will be subject to the destination website's privacy policy when you follow the link.
CDC is not responsible for Section 508 compliance (accessibility) on other federal or private website.
For more information on CDC's web notification policies, see Website Disclaimers.
CDC.gov Privacy Settings
We take your privacy seriously. You can review and change the way we collect information below.
These cookies allow us to count visits and traffic sources so we can measure and improve the performance of our site. They help us to know which pages are the most and least popular and see how visitors move around the site. All information these cookies collect is aggregated and therefore anonymous. If you do not allow these cookies we will not know when you have visited our site, and will not be able to monitor its performance.
Cookies used to make website functionality more relevant to you. These cookies perform functions like remembering presentation options or choices and, in some cases, delivery of web content that based on self-identified area of interests.
Cookies used to track the effectiveness of CDC public health campaigns through clickthrough data.
Cookies used to enable you to share pages and content that you find interesting on CDC.gov through third party social networking and other websites. These cookies may also be used for advertising purposes by these third parties.
Thank you for taking the time to confirm your preferences. If you need to go back and make any changes, you can always do so by going to our Privacy Policy page.