近3年来,西方国家白银产量增幅不大。1987年只比上年增加2％,为10554吨:其中,纯属白银矿山的产量尚不足35％、65％均为在冶炼有色金属矿石的过程中,作为副产品回收得来的。因此,白银的产量在很大程度上依附于其它有色金属的产量。由于纯白银矿山产银量在白银总产量中的比例在逐年下降, In the past three years, Western countries have seen little increase in silver production. In 1987, it increased by only 2% from the previous year to 10,554 tons: of which, the production of pure silver mines was still less than 35%, and 65% was recovered as a by-product during the process of smelting non-ferrous metal ores. Therefore, the production of silver is largely dependent on the production of other non-ferrous metals. As the proportion of silver produced by pure silver mines in the total silver output has declined year by year,