Uragoda C G
Central Chest Clinic, Colombo, Sri Lanka.
J Trop Med Hyg. 1989 Dec;92(6):422-4.
A study of underground miners in a graphite mine in Sri Lanka was conducted in 1987. Twelve (3.4%) of the 340 workers examined had radiographic lesions suggestive of graphite pneumoconiosis. In comparison, a survey carried out in another mine in Sri Lanka in 1972 showed that 63 (18.3%) of the 344 workers examined had similar lesions. Though the two surveys were comparable, they were conducted in two different mines. Therefore, the conclusion that the reduction in the prevalence of graphic pneumoconiosis was due to the introduction of improved dust control measures could only be tentative.
1987年对斯里兰卡一座石墨矿的地下矿工进行了一项研究。在接受检查的340名工人中，有12人（3.4%）有影像学病变，提示患有石墨尘肺。相比之下，1972年在斯里兰卡另一座矿山进行的一项调查显示，在接受检查的344名工人中，有63人（18.3%）有类似病变。尽管这两项调查具有可比性，但它们是在两座不同的矿山进行的。因此，关于石墨尘肺患病率降低是由于采用了改进的粉尘控制措施这一结论只能是暂时的。
