The US 6812 Division Bombe Report Eastcote 1944 Page 66

Tony Sale's Codes and Ciphers

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- 54 - TOP SECRET-T

KEEPING OF RECORDS.

Previous paragraphs have described the records kept in the control

Log Book and in the Teleprinter Log Book. Other records which are kept are
as follows:
Delay Log:

In this book are recorded all delays in the operation of the machine

which are in excess of 15 minutes. Should the delay exceed 30 minutes the
B.P. Master Checker is notified at the end of the 30 minutes. The book is a
supporting record for Time Sheets. It is arranged as shown:

RERUN BOOK.

If the job has been stripped and a defect is later found through

short testing inform B.P. and enter the details in the Rerun Book. This is
done only if the short is more than a 13-1 short and the menu is marked
"RR". No attempt is made to rerun until B.P. notifies us, telling us when
to rerun and what Bombe to use. It is then entered like a new job in the
Control Log Book, marked "R.R. for Chicago". The Rerun Book is for record
only.

MACHINE LOG BOOK.

One Machine Log Book shall be kept for each Bombe by the operator. It

contains all pertinent data relating to the Bombe's operation, the tests
made and the short circuits found. It is the responsibility of the operator
to keep an accurate log and all entries must be up to date at the end of
the shift. The entries are as follows:



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