Acc. 1998.0061 Olson Papers CT-93

Home Search Chip Talk Chip Fun Patents People Pictures Credits Copyright Comments

Transcription of original document
[du Pont Letterhead] CC: Dr. J.E. Booge
E. I. DU PONT DE NEMOURS & COMPANY
This document contains information affecting the national defense of the United States within the meaning of the Espionage Act, 50 U.S.C. 31 and 32, as amended. The transmission or the revelation of the contents in any manner to an unauthorized person is prohibited by law.
Newport, Delaware February 7, 1944
PIGMENTS DEPARTMENT
CLASSIFIED CONFIDENTIAL
DR. J. N. TULLY NEWPORT
SILICON FOR CT-93
The product from run RZ-66, made for CT-93, has been purified and analyzed and may now be released. A total of 11.4 pounds of the purified material was obtained. The description, quantity and analysis are as follows:
Code
Description
Quantity
Grams
Spectrographic Analysis
Minor
Traces
Zn
Al
Mg
Cu
Fe
Ti
Mn
RTZ-66A
0-6"
172
-
-
3
2
-
1
-
RTZ-66B
6"-36"
903
-
-
2
1
-
-
-
RTZ-66C
6"-36" scales
187
-
-
3
1
-
-
-
RTZ-66D
36"-72"
3461
-
-
1
3
-
-
-
RTZ-66E
36"-72" scales
191
-
-
2
3
1
-
-
RTZ-66F
Scales, large
292
-
1
2
3
1
-
-
5206
RTZ-66E and F quality is doubtful since four tests were necessary before check results were obtained. Different tests indicated from relatively large amounts to the absence of iron in these two samples.

As formerly decided, we shall exchange 2.33 pounds of RTZ-62 for an equal quantity of RTZ-66. The former is relatively finely divided and might prove difficult to handle in a melting operation. For this exchange we plan to use all of RTZ-66B and 154gm. of RTZ-66D. This material will enter the CT-112B account in the place of the following:

Code
Description
Quantity
Grams
Spectrographic Analysis
Minor
Traces
Zn
Al
Mg
Cu
Fe
Ti
Mn
RTZ-62A
186
-
2
2
2
-
-
-
RTZ-62B
456
2
-
2
2
-
-
-
RTZ-62C
415
1
-
1
1
-
-
-


National Museum of American History
Home Search Chip Talk Chip Fun Patents People Pictures Credits Copyright Comments