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James A. Van Allen lab journal, March 1958-September 1959
Page 209
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but on the paper tag it says N.B.S. No. 44518 Cobalt 60 - 0.63 mr/hr [Milliroentgens per hour at one meter?] ? The question is which number is correct.? Letter or tag Letter signed by T.P. Loftus, Physicist Gamma Ray Laboratory Radiological Equipment Section.
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but on the paper tag it says N.B.S. No. 44518 Cobalt 60 - 0.63 mr/hr [Milliroentgens per hour at one meter?] ? The question is which number is correct.? Letter or tag Letter signed by T.P. Loftus, Physicist Gamma Ray Laboratory Radiological Equipment Section.
Van Allen Papers
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