Functional state of respiratory system among coal miners
Koĭgel'dinova, S.S.
Meditsina Truda i Promyshlennaia Ekologiia 11: 20-24
2004
ISSN/ISBN: 1026-9428 PMID: 15636121 Document Number: 569656
The study covered respiratory function in apparently healthy coal miners varying in length of service. Findings were three stages of adaptation: satisfactory (length of service--15 years); boundary, with primary functional strain of bronchi and lungs (length of service--16-20 years); unsatisfactory, with secondary functional strain of bronchi and lungs (length of service over 20 years).