地矿部各大区探矿科技情报网建立近十年来，在总网领导下，已开展了大量的情报交流活动。其中重要的一项就是每年组织一次情报交流会。华北情报网自建网以来，先后已召共过六次年会，我们感到一年 In the past ten years since the establishment of the prospecting science and technology intelligence network in various regions of the Ministry of Geology and Mineral Resources, under the leadership of the General Network, a great deal of intelligence exchange activities have been carried out. One of the important things is to organize an information exchange meeting every year. Since its establishment, North China Intelligence Network has called for six annual meetings in succession, and we feel it year after year