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R. L. M. C.
INTERIOR MEMORANDUM
Date
Subject
For Attention of
Answering Memo. of
tests show that Chis dust is exceptionally fine and will
UNTED'S
not settle even in still air readily. If so how can it re-
RADIUN
main settled in this painting room where there are continu-
air currents due to open windows vibrations and the moving
of individuals about the room. Would it stay in suspension
and be caught in the clothes of individuals,
It woukd be very simple e for 18 to rig up is little
apparatus which would enable us to sample the air and
gather the dust which could be subjected to: radio active
determinations in our own laboratory. On page 12 near the
bottom Dr Drinker emphasizes that feet that so far the
results of the tests are negative because of the "extrem-
1y small quantities of radium combined with the zine sulphide.
It does not seem to me that the fogging of dental
films is really indicative of over exposure. In view of
the quantity of radium handled about the plant and the
extreme sensitiveness of these films a film might become
foggeg when a small quantity of highly radboactive material
wase brought nearby the exoosure to which an individual
might be subjected to in this shortytime would be considered
harmless. We know that a piece of good ore placed upon a
film would cause that film to become fogged yet we would
hesitate to say that it would be harmful to carry the ore
even for a consideral ble length of time.
Other application plants must have these same conditions
of dust and exposure why has not this trouble resulted els
where.
In the blood tests we see that the individuals who
are subjected to an exposure many times greater than any
operator really have a better existing condition than these
operators. In the crystallization department the exposure
is not only external but in pipetting solutions emanations
are bound to be inhaled ana maybe even drops of very active
solutions. This would also bring up the question. of safety
of emanation water machines. Yet the mouth conditions are
good.
Mr. Bilstein who hi B had varied experience with both
radium and zine has recently had a tooth extracted and to
date has suffered no ill ef ects.
Dr Drinkers 8 mparis ns are made with normal indidual
and i believe this should pe made on a basis of the average
industrial worker. Possibly this is why the Life Extension
Instutedid not comment on this finding because this con-
dition is common amongst industrial women workers. They
might be able to furnish us with data on this point, in viww
the fact that they carry on numerous examinations for
industrial concerns and insurance companies.
It is quite possible the to living conditions of indiduals
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Document data
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"ocrText": "R. L. M. C.\nINTERIOR MEMORANDUM\nDate\nSubject\nFor Attention of\nAnswering Memo. of\ntests show that Chis dust is exceptionally fine and will\nUNTED'S\nnot settle even in still air readily. If so how can it re-\nRADIUN\nmain settled in this painting room where there are continu-\nair currents due to open windows vibrations and the moving\nof individuals about the room. Would it stay in suspension\nand be caught in the clothes of individuals,\nIt woukd be very simple e for 18 to rig up is little\napparatus which would enable us to sample the air and\ngather the dust which could be subjected to: radio active\ndeterminations in our own laboratory. On page 12 near the\nbottom Dr Drinker emphasizes that feet that so far the\nresults of the tests are negative because of the \"extrem-\n1y small quantities of radium combined with the zine sulphide.\nIt does not seem to me that the fogging of dental\nfilms is really indicative of over exposure. In view of\nthe quantity of radium handled about the plant and the\nextreme sensitiveness of these films a film might become\nfoggeg when a small quantity of highly radboactive material\nwase brought nearby the exoosure to which an individual\nmight be subjected to in this shortytime would be considered\nharmless. We know that a piece of good ore placed upon a\nfilm would cause that film to become fogged yet we would\nhesitate to say that it would be harmful to carry the ore\neven for a consideral ble length of time.\nOther application plants must have these same conditions\nof dust and exposure why has not this trouble resulted els\nwhere.\nIn the blood tests we see that the individuals who\nare subjected to an exposure many times greater than any\noperator really have a better existing condition than these\noperators. In the crystallization department the exposure\nis not only external but in pipetting solutions emanations\nare bound to be inhaled ana maybe even drops of very active\nsolutions. This would also bring up the question. of safety\nof emanation water machines. Yet the mouth conditions are\ngood.\nMr. Bilstein who hi B had varied experience with both\nradium and zine has recently had a tooth extracted and to\ndate has suffered no ill ef ects.\nDr Drinkers 8 mparis ns are made with normal indidual\nand i believe this should pe made on a basis of the average\nindustrial worker. Possibly this is why the Life Extension\nInstutedid not comment on this finding because this con-\ndition is common amongst industrial women workers. They\nmight be able to furnish us with data on this point, in viww\nthe fact that they carry on numerous examinations for\nindustrial concerns and insurance companies.\nIt is quite possible the to living conditions of indiduals"
}