Results The main causes of death which harm the health of coal miners were malignant tumors cerebral vascular diseases injury and poison diseases heart diseases respiratory diseases and digestive diseases .

结果危害井下工人健康的主要死因依次是恶性肿瘤、脑 血管疾病、损伤与 中毒、心血管疾病、呼吸系统疾病和消化系疾病。