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Re:Majority in Japan backs nuclear power for first time sinc... by akvadrako on Monday March 28, 2022 @12:54PM (#30832615)
Lets first consider all Uranium in Earth's crust, about 65 trillion tons. So given,

  - 65e15 kg = Uranium in Earth's crust
  - 709000 = 709,000 MJ/kg energy density of natural U²
  - 500e12 MJ = 500 million TJ annual global energy usage
  - 92e6 = 65e15 × 709e3 / 500e12
So 92 million years.

Australia has about 1.7e9 kg of reserves at current prices¹. That comes to 2.4 years.

[1] https://en.wikipedia.org/wiki/Peak_uranium [2] https://www.plux.co.uk/energy-density-of-uranium/

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