Annual release of uranium and thorium radioisotopes from coal combustion, predicted by Oak Ridge National Laboratory | ORNL to cumulatively amount to 2. 9 million tons over the 1937-2040 period, from the combustion of an estimated 637 billion tons of coal worldwide.

Annual release of uranium and thorium radioisotopes from coal combustion, predicted by Oak Ridge National Laboratory | ORNL to cumulatively amount to 2. 9 million tons over the 1937-2040 period, from the combustion of an estimated 637 billion tons of coal worldwide.

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