苏联和美国共同承担宇宙线中的中微子检测项目。1989年末在Andyrchi山中进行,检测现场在深4000m的地下。这个项目提出使用70t高纯镓,其中的55t预定由苏联供应,已于1989年6月在哈萨克共和国的Pavlodar氧化铝厂开始生产。1989年 The Soviet Union and the United States share the cosmic ray neutrino detection project. The end of 1989 in Andyrchi mountain, test site at a depth of 4000m underground. The project proposes the use of 70t of high-purity gallium, of which 55t is scheduled to be supplied by the Soviet Union and started production at the Pavlodar alumina plant in the Republic of Kazakhstan in June 1989. in 1989