究其原因，专家怀疑与电焊工有关。

Investigate its reason, experts doubt and electric welders are concerned.

目的探讨电焊工尘肺预防的经济效益和社会效益。

Objective The economic and social benefits of welder pneumoconiosis prevention were studied.

电焊工在芝加哥和西北铁路公司码头厂房工作。

A welder who works in the round-house at the Chicago and Northwestern Railway Company's Proviso yard.

各类尘肺新发病例数以矽肺为首，石棉肺、铸工尘肺和电焊工尘肺次之。

The cases of silicosis were ranking the first, with asbestosis, founder pneumoconiosis and welder pneumoconiosis followed.

记者了解到，死者姓杜，今年35岁，贵州沿河县人，平时在三水做电焊工。

Reporters learned that the inmate, surnamed Du, 35, along the river in Guizhou County, usually in the Sanshui do welders.