HERE IS A COPY OF THE LIST OF MATERIALS WE NEED FOR THE CONVERSION OF THOSE THYAC TYPE 389 GM COUNTERS.

• Document Type: CREST
• Collection: General CIA Records
• Document Number (FOIA) /ESDN (CREST): CIA-RDP78-03535A000600110023-7
• Release Decision: RIPPUB
• Original Classification: K
• Document Page Count: 2
• Document Creation Date: December 22, 2016
• Document Release Date: February 8, 2012
• Sequence Number: 23
• Publication Date: January 30, 1957
• Content Type: MISC

Declassified in Part - Sanitized Copy Approved for Release 2012/02/14: CIA-RDP78-03535A000600110023-7
30 January 1957
t of materials we need for the conversion
li
H
s
ere is a copy of the
of those Thyac type 389 GM counters. The phenolic should be 1/2 inch thick
and we need approximately 250 square inches of it. Almost any shape will
do as long as we can cut the number of required pieces from it. (Sometimes
they have an odd piece on hand that they can't sell and you may get it
cheaper than the others. for the shop to do the work on
Approval has been given in my HQ P
a non priority basis. ( That is what I understand. )
I will get the remainder of the parts I requ files. IAcan
get to it. I will send you the list and also a copy for your s
soon as I get the other parts I ordered, I can give you an accurate
list of parts( additional) to get things ship shape.
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8-h It sep~s~..:
sYbl~Oled to ictur:
Declassified in Part - Sanitized Copy Approved for Release 2012/02/14: CIA-RDP78-03535A000600110023-7
 Declassified in Part - Sanitized Copy Approved for Release 2012/02/14: CIA-RDP78-03535A000600110023-7
2 Jan 1957 4 hr=
3 Jan 1957 4 hrs.
Project $D07-1 Radiation Equipment
Second Autoscaler: Tested tubes 1 6SL7 defective shorted weak
1 weak
Replaced tubes,
Adjusted Lew voltage to 210 volts
Adjusted calibration to count correctly.
Needs: 1 Hk-24 334
1 shorting n? plug AN-3106-28-8P (P3)
1 GM tube
This tt 5z,s