白银公司露天矿一采场为深凹露天矿。长期以来通风困难,劳动卫生条件恶劣,职业病危害日益加剧。据此,冶金部安全技术局组织联合调查组,于今年1月进行了冬季实测和调查。调查结果表明:该矿一采场由于气候条件恶劣,采场外部污染严重,边坡陡,上口小,采深大,冬季长而且干旱缺水难以湿法除尘等原因,以及过去在露天矿设计中不考虑大气污染问题,因此深部工作 Silver Company open pit mine a deep open pit mine. Long-term ventilation difficulties, poor health conditions, occupational hazards increasing. Accordingly, the Metallurgical Security Technology Bureau organized a joint investigation team to conduct winter surveys and surveys in January this year. The survey results show that the first stope of the mine is characterized by poor weather conditions, serious pollution outside the stope, steep slopes, small upper catchment, long deep mining, long winter, and difficult to wet-dry due to drought and water shortage. In the past, Design does not consider the issue of air pollution, so deep work