Raowool Insulation; Isotopic content

[jgbarnes@ix.netcom.com (JAMES BARNES)]

Good afternoon,

Several weeks ago I sent queried if anyone had heard of Raowool Insulation.  
Several of you responded with information; some requested that I post the 
isotopic content of the material we had.

The isotopic content we measured is:

#	nuclide	conf.value	  Activity ( pCi/SAMPLE) -------------- 
					  measured		     error

1	Tl-208		.9942		4.907E+01		+-  5.13%   
2	Pb-210	       .9998		1.064E+02		+-  7.62%   
3	Pb-212	       .9965		1.823E+02		+-  5.16%   
4	Pb-214	       .8709		3.075E+02		+-  3.08%   
5	Bi-214		.9694		3.907E+02		+-  2.30%   
6	Ra-224	       .9998		2.160E+02		+- 15.27%   
7	Ra-226	       .9987		7.510E+02		+-  5.43%   
8	Ac-228		.9340		1.428E+02		+-  3.68%   
9	Th-227	       .9996		2.020E+01		+- 15.71%   
10	Th-234	       .9999		1.754E+02		+-  7.02%   
11	U-235		.9904		4.562E+01		+-  5.43%   


There were trace levels of Co-60; I have not listed this as it was from another 
source and had nothing to do with the insulation.

Particular thanks to Mr. Kolb who was particularly helpful.


Jim Barnes, CHP
RSO
Rocketdyne Division; Rockwell Aerospace