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我局为适应新能源的开发利用，自1965年以来从事铀矿地质普查勘探工作，至1986年已施工勘探坑道数万米。为降低放射线对职工的危害，在搞好个人防护的基础上，一直围绕着如何降低和控制氢气浓度的防护问题进行研究。去年成立了试验小组，选择穿脉多、沿脉长，涌水量大的PD_(12)号坑道进行加强通风，机械密闭排水、封闭穿脉的综合试验。一年来，防氡降氡工作取得了相当好的效果。全坑氡气浓度控制到1爱曼以下，达到了国家标准。
In order to meet the development and utilization of new energy sources, our bureau has been engaged in census of geological survey of uranium deposits since 1965 and tens of thousands of meters of exploration tunnels have been constructed by 1986. In order to reduce the harm of radiation to employees, on the basis of improving personal protection, research has been conducted on how to reduce and control the hydrogen concentration protection. Last year, a test group was set up to conduct comprehensive tests on enhanced ventilation, mechanical seal drainage, and enclosed perforation through the PD_ (12) tunnel with a large pulse length and long pulse length. Over the past year, radon radon reduction work has achieved quite good results. Full pit radon concentration control to 1 Aiman below, reached the national standard.