Registration methods were, of course, developed early and in January, 1944 a
joint registry was founded for Major Tester's and Mr. Newman's sections. This
registry kept track of all material entering or circulating in either section, and
itself kept all tapes, or documents for tapes, not being worked on. This avoided
congestion and delays in the Newmanry. Few messages strayed and those that did
were quickly recovered.
(b) Division of work
Work was divided between Room 12 and Block H. Room 12 dealt with tapes
required for setting and the T registry in Room A, Block H, with tapes required
for wheel-breaking or Cribs. An soon as a days' wheels were broken all tapes and
documents for the wheel-day were sent over from Block H to Block F.
(c) Cards and Circulation
The basic system for all procedures was the same: the copies of each tape
perforated were teleprinted from Knockholt. Later on the RF (Red Form) and Master
Tape were sent by DR.(Dispatch Rider). A procedure card was started for each
message and a pigeon hole allotted for the tapes and RF (See Fig 34 (I) ).
In addition to the procedure card, a card was made out for each message,
which accompanied the tapes on their journeys. These were used in Ops or Block H
for the registration of various setting and rectangling processes. The "Ops Card"
for instance was used for setting messages and it was returned to Room 12 when the
message was abandoned or set.
When a set of wheels was broken the relevant material was transferred from
the T-Registry to Room 12 and from the H-Registry to Ops. On the other hand if
the wheels for a day were not broken within a month the pigeon holes in Block H
were emptied, the RF was filed and the master and another tape were stored. The
pigeon holes in Block F were not cleared until a setting message was abandoned or
completely decoded. In the latter case one copy of the decode was sent to the
appropriate intelligence section and one copy was filed in Room 41.
(d) Other Records
Other records kept include registers of:
All tapes intercepted.
'A' tapes and their history.
Tapes for setting on broken days.
Tapes transmitted from Knockholt
Settings of decoded messages.