ACEESC)
BOM REA
September 21, 195)
Mr. H. ¥. Morgenthaler
Insurance Manager
BES
rolstron, Incorporated
Be eeeey
venus
T COPY AVAILABLE
Bear Mr. Morgenthaler:
Thank you for your letter of August 11, 1954. Our recommendations
for the control of beryllium hazards include:
1.
The in-plant atmospheric concentration of beryllius
at beryllium operations should not exceed 2? micrograms
per cubic meter as an average concentration throughout
an S-hour day.
2.
Even though the daily average might be within the
limits of Recommendation 1, ne personnel should be
exposed to a concentration greater than 25 micrograms
per cubic meter for any period of time, however short.
3e
In the neighborhood of an AEC plant handling beryilium compounds, the average monthly concentration at
the breathing zone level should not exceed 0.01 microgram per cubic meter,
h.
There should be an adequate medical program, super-
vised by a physician who is familiar with beryllium
poisoning, to cover all workers exposed to bery]llium
and its compounds.
S.
If there is ary evidence that an individual has
chronic berylifum poisoning, such an individual should
be excluded from any further exposure to beryllium
compounds «
6.
Beryllinm operations should be carried on in as few
Places as
US DOE ARCHIVES
326 U.S. ATOMIC ENERG
COMMISSION
-
RG DCzw HA shriceol pp)
Collection
Box
Folder
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Ss SES
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DO’ ARCHIVES