由日本矿冶学会和美国采矿、冶金和石油工程师学会联合举办的第四届矿冶联合会议于1980年11月5日至8日在日本东京国际会议大厦举行。会议在日本和中国分别组织八条路线参观。以中国金属学会副理事长洪戈为团长的中国金属学会和中国煤炭学会代表团一行十人,应邀参加了这次会议。出席会议的有日本、美国、中国、菲律宾、澳 The 4th Joint Conference of Mining and Metallurgy, jointly organized by the Japan Institute of Mining and Metallurgy and the American Institute of Mining, Metallurgy and Petroleum Engineers, was held in Tokyo, Japan from 5 to 8 November 1980. Meetings in Japan and China were organized eight routes to visit. A ten-member delegation headed by Hong Ge, vice chairman of China Society for Metals, headed by the Chinese Society of Metals and the China Coal Society, was invited to attend the conference. Present at the meeting were Japan, the United States, China, the Philippines and Australia