Document ID (ISN) | 73590 |
CIS number |
99-1608 |
ISSN - Serial title |
0003-4878 - Annals of Occupational Hygiene |
Year |
1997 |
Convention or series no. |
|
Author(s) |
Seixas N.S., Heyer N.J., Welp E.A.E., Checkoway H. |
Title |
Quantification of historical dust exposures in the diatomaceous earth industry |
Bibliographic information |
Oct. 1997, Vol.41, No.5, p.591-604. Illus. 12 ref. |
Abstract |
Quantitative estimates of dust exposure in a diatomaceous earth mining and milling operation have been derived based on air sampling records for the period 1948-1988. Geometric mean concentrations were 0.37mg/m3 during the 1950s and 0.17mg/m3 during later periods. Exposures were estimated using two linear models, one estimating the changes in concentration over time and the other providing job-specific mean exposures during the more recent period. Average estimated respirable dust concentrations for 135 jobs were 3.55mg/m3 (prior to 1949), 1.37mg/m3 (1949-1953), 0.47mg/m3 (1954-1973) and 0.29mg/m3 (1974-1988). Despite the limitations of the available data, the estimation procedures used are expected to provide reasonable quantitative estimates of silica-containing dust exposure for subsequent exposure-response analyses. Topics: diatomaceous earth; silica; dust level; dust measurement; exposure evaluation; exposure records; job-exposure relation; mathematical models; mining and quarrying; respirable dust. |
Descriptors (primary) |
diatomaceous earth; silica; mining and quarrying; exposure evaluation; respirable dust |
Descriptors (secondary) |
dust level; dust measurement; mathematical models; exposure records; job-exposure relation |
Document type |
D - Periodical articles |
Country / State or Province | USA |
Subject(s) |
Mines and quarries
|
Broad subject area(s) |
Chemical safety
|
Browse category(ies) |
Mining and quarrying Exposure evaluation
|