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1627 
Journal Article 
X ray appearances of the lungs of electric arc welders 
Doig, AT; Mclaughlin, AIG 
1936 
1 
The Lancet
ISSN: 0140-6736
EISSN: 1474-547X 
NIOSH/00132419 
1 
771-774 
Clinical and radiological findings for 16 electric arc welders were reported. The subjects, aged 23 to 41, had been arc welders for 3.5 to 17 years. Six positive cases showed nodular mottling or stippling of one or both lungs, generally more marked in the upper half of the lung. All had slight to persistent coughs with sputum, in some cases tinged with black. Crepitations were heard and chest expansion was somewhat limited in three positive cases. Three suspicious cases had bronchial shadows in the upper lobes and increased fine bronchial branching. Nodulation was less fine or well defined as in positive cases. Two subjects had coughs that became worse after working in an enclosed space. A third subject only had a cough after working inside a tank. Seven remaining cases did not have nodulation, but radiographs indicated bronchial striations and increased markings. Four cases were asymptomatic while three had cough and sputum. The authors conclude that bronchial changes were caused by the dust and fumes inhaled while welding, including iron-oxide (1309371) and asbestos (1332214). 
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• OPPT_Asbestos, Part I: Chrysotile_F. Human Health
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