1991年5月21～24日,在奥伦堡州加伊城召开了“降低矿山充填料水泥用量”研讨会。会议由苏联冶金部、乌拉尔铜业科学研究设计院、加伊采选公司和有色冶金科学技术学会斯维尔德洛夫斯克分会组织。会议程序包括听取和讨论总报告和专题报告、交流地下矿山充填和采矿工作经验及提出建议。参加这次研讨会的20名代表分别来自 From May 21 to May 24, 1991, a seminar on “Reducing the Amount of Mine Filling Cement” was held in Gai city, Orenburg State. The meeting was organized by the Soviet Union Ministry of Metallurgy, Ural Copper Institute of Scientific Design, Gary mining company and Nonferrous Metals Institute of Science and Technology Sverdlovsk branch organization. The proceedings include listening to and discussing general and special reports, exchanging experiences and advising on the work of filling and mining underground mines. Twenty representatives attended the seminar respectively