根据美国能源部的调查,美国铀生产者1980年对国内新的或扩建中的铀矿山及水冶厂支出的经费估计为4.45亿美元,高于1979年4.28亿美元的计划支出数字。1978年实际支出总额为4.27亿美元,显然低于早先估计这一年可能支出6.34亿美元的数字。 According to the investigation of the US Department of Energy, the US uranium producer’s expenditure on new or expanded uranium mines and hydrometallurgical plants in the country in 1980 was estimated at US$ 445 million, which is higher than the planned US$ 428 million expenditure in 1979. The total actual expenditure in 1978 was 427 million U.S. dollars, which is obviously lower than the figure of the estimated 644 million U.S. dollars that could have been spent in the year.