a
a
——
‘stainless steel,
The contaminated nickel
was again of the same amount used in the -
previous study and that contained the bulk
of the uranium contamination.
In the remelt we found readings
that were negligible in the nickel stain-
less steel and the residual radium contanAnetion was the same as that found for the
pre-Atomic Energy produced N.B.&. standard
as was expected.
Fost of the contamin~
ation came off with the slag.
Next slide, please,
The stainless steel remelt, in that
we found a similar situation,
In remelting
the ateinless we found thot our sub-surface
sample was comparable to the sample produced
that we obtained from the National Bureau of
&t andard 8.
The major bulk of the contamination
came off in the slag,
We found in the top half
surface some slag of contamination of 50.5
milligrams of uranium per gram.
Copper semples were obtained from
Oak Ridge and put in three batches; those that
showed alpha contamination of 800, 4,000 and
62