Alpha-Activity of Wheat and Flour

@article{Marsden1961AlphaActivityOW,
  title={Alpha-Activity of Wheat and Flour},
  author={E. Marsden and E. Greer},
  journal={Nature},
  year={1961},
  volume={189},
  pages={326-327}
}
IN their work on naturally occurring radioactivity in man and his environment, Mayneord and his co-workers have indicated1,2 the wide range of alpha-radioactivity found in the more common foodstuffs. Using the same experimental method, we have recently made measurements on a number of samples of wheat and wheat products of known origin, and wish in this communication to report briefly on three aspects of our findings. 
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References

Alpha-Ray Activities of Humans and their Environment
TLDR
It is concluded that food is the important factor in determining the daily intake of naturally occurring radioactive material by animals, and its intake completely overshadows the intake from milk and water. Expand