全球有色金属矿产勘查投入自20世纪90年代初开始回升,到1997年达到52亿美元的高点。此后连续5年下降,2002年为12年的最低点(19亿美元)。从那个时候开始,根据加拿大金属经济集团(MEG)估计,全球有色金属勘查投入(不包括铀矿)又连续6年保持增长,2008年达到自1989年MEG发表公司勘查 The global non-ferrous mineral exploration investment has picked up since the early 1990s and reached a high of 5.2 billion U.S. dollars in 1997. After five consecutive years of decline, the 12-year low in 2002 (1.9 billion). Since then, according to estimates by the Canadian Metals Economy Group (MEG), global non-ferrous metal exploration investment (excluding uranium deposits) has continued to grow for six consecutive years, reaching a record high since 2008, when MEG released its survey of companies