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据报道,玻利维亚矿山生产经过五年大幅度(从14％到53％)增长后,1991年下降到2％。但1990年产值为3.667亿美元,下降了13％,不到1980年的50％。这种下降反映出低的金属价格和从传统的
It is reported that Bolivian mine production dropped to 2% in 1991 after a five-year growth (from 14% to 53%). However, the output value in 1990 was 366.7 million U.S. dollars, a decrease of 13%, less than 50% in 1980. This decline reflects the low metal prices and from the traditional