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最近几年,在澳大利亚澳北区阿利盖特河地区的东部,已发现了数个大型铀矿床。但是,在那里有着大片的厚层砂岩覆盖,三家找矿公司到目前为止还无法突破这个障碍。诺兰达公司认为,那里的常规普查方法的勘探深度只能达到6呎。为了超过这个深度,已设想在1973年底前完成氡气测量的方法试验计划,以便在1974年初全面展开大规模的氡法普查。据报导,这是世界上最大的氡法普查计划之一。氡法普查的地区为兰杰
In recent years, several large-scale uranium deposits have been discovered in the eastern part of the Alleghet area in the Australian and North Australian region. However, there is a large area of thick sandstone covering there, and the three prospecting companies have so far been unable to overcome this obstacle. Nolanda believes that the exploration depth of the conventional census methods there can only reach 6 miles. In order to exceed this depth, it has been envisaged to complete a pilot test plan for radon measurements by the end of 1973 so that a large-scale census can be conducted in early 1974. According to reports, this is one of the largest census plans in the world. The area of the Census