Glover J R, Bevan C, Cotes J E, Elwood P C, Hodges N G, Kell R L, Lowe C R, McDermott M, Oldham P D
Br J Ind Med. 1980 May;37(2):152-62. doi: 10.1136/oem.37.2.152.
In a study of slate workers in four areas in North Wales 725 workers and ex-workers who had been exposed to slate and to no other dust were seen, together with 530 men from the same area who had never been exposed to any dust. Evidence of pneumoconiosis was found in one-third of the slate workers, and 10% had degrees of pneumoconiosis that would attract compensation (category 2 or higher). The prevalence of respiratory symptoms was high, and there was evidence of an effect of both simple and complicated pneumoconiosis on lung function additional to that of age. There was a high prevalence (40-50%) of radiological lesions suggestive of healed tuberculosis in men aged over 55. Either pneumoconiosis or old tubercular lesions (or both together) could account for the current symptomatology and disability of the men.
在对北威尔士四个地区的板岩工人进行的一项研究中，研究人员观察了725名曾接触过板岩且未接触过其他粉尘的在职和离职工人，以及来自同一地区的530名从未接触过任何粉尘的男性。在三分之一的板岩工人中发现了尘肺病的迹象，10%的人患有达到可获赔偿程度的尘肺病（2级或更高）。呼吸道症状的患病率很高，有证据表明，单纯性和复杂性尘肺病除了年龄因素外，还对肺功能有影响。在55岁以上的男性中，提示陈旧性肺结核的放射学病变患病率很高（40%-50%）。尘肺病或陈旧性结核病变（或两者兼有）可能是导致这些男性目前症状和残疾的原因。
