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据美国国际贸易委员会发布的消息,1977年至1981年间,美国铅锌消费量分别削减35％和25％。铅的消耗量1977年为150多万吨,1981年降到100万吨左右。锌的消耗量1977年达110万吨,1981年降至83万吨。
According to the United States International Trade Commission released the news, between 1977 and 1981, the United States lead and zinc consumption were reduced by 35% and 25%. The consumption of lead was over 1.5 million tons in 1977 and dropped to about 1 million tons in 1981. The consumption of zinc reached 1.1 million tons in 1977 and dropped to 830,000 tons in 1981.