TY  - BOOK
ED  - WHO Study Group on Recommended Health-Based Limits in Occupational Exposure to Selected Mineral Dusts (‎Silica Coal)‎
ED  - World Health Organization
TI  - 	Recommended health-based limits in occupational exposure to selected mineral dusts (‎silica, coal : report of a WHO study group, meeting held in Geneva from 6 to 12 March 1984‎
T2  - World Health Organization technical report series ; no. 734
SN  - 9241207345
U1  - 100 SD:610.621 
PY  - 1986///
CY  - Geneva
PB  - World Health Organization
KW  - Environmental Exposure
KW  - Occupational Diseases
KW  - Silicon Dioxide
KW  - Coal
KW  - Community Health and Primary Health Care
N1  - 1. Introduction -- 2. Causal agents : properties, uses, health hazards 3. retention and elimination of airborne particulate matter -- 5. Health effects of exposure to airborne silica and coal -- 6. Relationship between exposure and relevant health effects -- 7. Recommendations -- Acknowledgements -- References -- Annexes
N2  - Evaluates the effects of inhaled mineral dusts containing relatively high levels of silica and of mixtures of dusts produced during the extraction and processing of coal. Utilizing data on exposure-effects and exposure-response relationships, the report sets forth recommendations based on an evaluation of the incidence of silicosis or coal-workers pneumoconiosis following exposure to silica and coal. Recommendations take account only of health considerations and do not include the problem of implementing operational limits. Annexed to the report are a definition of pneumoconiosis adopted in 1971, a summary of the international classification of radiographs of pneumoconiosis, and a table listing occupational exposure limits in selected countries
ER  -