据美国矿山局资料, 自60年代初世界氧化铝产量大约以与铝土矿开采量同样的增长速发增长,并于资本主义经济开始大衰退前的1980年达到2825.7万吨的最高指标。1980年前,各国家和地区氧化铝产量增长的不平衡性,还没有象铝土矿开采业中那样被反映 According to the US Bureau of Mines, since the early 1960s, the world’s alumina production increased at about the same rate as bauxite production and reached its highest level of 28.257 million tons in 1980 before the capitalist economy began its Great Recession. Prior to 1980, the imbalance in alumina production growth in various countries and regions was not yet reflected in the bauxite mining industry