一、概况由中国科学院黄金办公室组织院数理化学局和有关所代表共五人组成考察团,以学部委员陈家镛为团长,于1990年11月3日至11月20日走访了美国的四个城市,六个研究所;三所大学和三个矿山,共12个单位。这次赴美考察的任务是:考察美国在金矿特别是难冶矿选冶方面的科研和生产现状,吸 I. Overview The delegation consists of five members from the Bureau of Physical and Chemical Affairs and the representatives from the Gold Office of the Chinese Academy of Sciences. The delegation headed by Professor Chen Jia-学, a member of the academic department, visited the United States from November 3 to November 20, 1990 City, six research institutes; three universities and three mines, a total of 12 units. The mission of the mission to the United States is to examine the status of scientific research and production in the United States in the field of gold mining, especially in the refractory industry,