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In light-water reactors, 1 kg of natural uranium – following a corresponding enrichment and used for power generation– is equivalent to the energy content of nearly 10,000 kg of mineral oil or 14,000 kg of coal. [16] Comparatively, coal, gas, and petroleum are the current primary energy sources in the U.S. [17] but have a much lower energy ...
Data on elements' abundance in Earth's crust is added for comparison. ... and the cost of extraction of the element, at zero. ... 1.84 – 2.16: 0.003 11 – 0.003 65 ...