据《采矿学报》数据服务中心报道 ,目前全世界年采矿石量超过 3 0 0万 t的特大型金矿有89座。从分布情况看 ,美国、南非、澳大利亚等 3个国家特大型金矿数量最多 ,分别为 2 8、16和13座。这 3个国家合计有 5 7座 ,占总数的 64%。从开采方法看 ,采用露天开采方法的有 5 9座 ,占 According to the “Mining Journal” data service center reported that the world’s annual mining volume of more than 30 million tons of large gold mines 89. Judging from the distribution, the United States, South Africa, Australia and other three countries the largest number of large gold mines, respectively, 28, and 13 seats. The three countries together have 57 seats, accounting for 64% of the total. From the mining method, there are 59 open-pit mining methods, accounting for