EWT minutes C Dec 12 protesting against external interference with BP staff, obtains...

HW 14/60

1942 Dec 1-10

EWT minutes C Dec 12 protesting against external interference with BP staff, obtains C support; letter from FE Adcock of Kings College Cambridge to EWT asking him to release Saltmarsh, a founder member of the AS SALU and now working in Hut 3, to the College; minutes of 6th meeting of BPCC Dec 7; minutes of 9th meeting of Heads of Section at Berkeley Street on Dec 1; regulation of access to Huts 3 and 6; letter from Capt Haines RN to EWT on policy for allocation of Wrens and Bombes, WRNS complement for Stanmore - dormitories for 250 Wrens who were to work up to 65 Bombes; AD (S) attempts to resolve staff dispute between HNS and Wing Cdr Jones of Hut 3 over division of Hut 3 and NS duties involving Lt Haslam, Duties of 3N - paper by EWT in attempt to resolve dispute over Haslam; NS copy of translated Italian Admiralty 66-page document listing procedures for using codes and cyphers in Italian Navy; EWT and AD (S) recommend using Algiers as Sigint site as soon as possible, M/S letter from F/O Stacey, attached to AFHQ Algiers, to HAS; AS report of Research and Exploitation Nov 15-30, report to HAS from Handel Edwards on relationship of F traffic to recent developments in southern France, scheme for warning RAF bombers of GAF fighter threat as seen in Sigint Dec 2, meeting at AM to discuss this action-on procedure Dec 9, reports from UK Sigint stations on effects of RAF jamming against GAF night fighter frequencies - little reaction; duties of ARP wardens; machine processing techniques for Floradora - testing of US system; Fusion Room resubordinated to Hut 6 Dec 10; EWT speaks to Freeborne on waste of electricity in Block C Machine Room; ER Vincent of Room 11 to prepare index of all codes and cyphers processed at BP, asks sections to cooperate; paper on support from AI4 (F) AS, 6 IS and 3 L for Huts 3 and 6 Dec 8; BP RAF candidates for Japanese courses; results of Services' Sigint Selection Board Dec 2-4 for university graduates; evaluation of intercept from Keddleston Hall, 6 IS party to go there from Beaumanor to direct intercept and perform TA, Wick allocated 5 sets for E to come under operational control of Chicksands; W/T I research on non-morse groups being taken at Knockholt; paper by Wing Cdr Mapplebeck on value of Scorpion Sigint processing party in Cairo with comments by Wing Cdr Jones of Hut 3; letter to DDMI (O) on exploiting German E in Russia Dec 5; Bayly of BSC sends EWT Canadian Y Committee 13-page report based on commercial and diplomatic Sigint requirments of CEU and UK Dec 4, AGD letter to EWT and C on position of CEU and suggested reply on future CANUKUS policy to Kendrick in Ottawa Dec 8, correspondence with UK Sigint representative in Washington Major Stevens, with US War and Naval Departments, memo to Field Marshal Sir John Dill Dec 2 from Capt EE Hastings in Washington on US decision to refuse entry to Bell Company secret laboratories on voice scrambling devices to Dr Turing of BP and subsequent exchanges between Sir John and General Marshall US Chief of Staff and other senior officers Dec 9 1942-Jan 9 1943 finally resulting in Turing being granted permission to visit the Bell establishment; request from Lt Col GA Bicher of US Army ETO HQ for more Sigint training material from BP Dec 8, Bicher gives details of two US Army privates he wishes to work at BP Dec 10; liaison with Col Crankshaw in Moscow, Russians wish to end Sigint cooperation Dec 2, Admiral Miles wishes to send Crankshaw home, eventually clear that Russian Navy wishes to continue cooperation, only Army intent on breaking off relations, letter from HAS to ACASI with suggestions on how to treat Russians on Sigint cooperation and to convince them of vulnerabulity of their own cyphers to German exploitation Dec 2, same day EWT sends letter to C along same lines, supports case with evidence from 5 BP reports that Germans exploiting Russian comms; liaison with Shaw in Kilindini, Merry in Melbourne, 371 WU and GOC-in-C West Africa, Mauritius, Free French and with WO and AM; correspondence with CBME, details of three E machines sent from ME to BP Nov 26-Dec 1, support for 380 WU and RAF ME HQ Algiers, for Gibraltar and Malta, French Sigint liaison with Malta; Cheadle CO's List of personnel entitled to see E; report by P/O P Scorer, leading Sigint team on board HMS Faulknor, part of a northern supply convoy to Kola Peninsula and return to UK, Scorer meets Russian Sigint officers in Murmansk and receives packet of captured German signals' documents; Beaumanor and Chicksands DF networks Dec 5, DF Exchange procedures Dec 10; draft letter from WO to BP on new format to be followed from Jan 1 1943 by Service units sending in periodic returns of sets and operators; WO draft on tasks of DD (Y), MI-8, Sigs 4 and Sigs 6, Dec 3, minutes of meeting at WO to discuss new appointment of DD with chart of responsibilities for MI-8, Sigs 4 and Sigs 6 Dec 9; MI-8 to convert mobile Harpendon group into fixed Sigint station manned by ATS, strong reservations from BP, reply from MI-8 on future Army Sigint plans for UK; minutes of meeting at WO to discuss new appointment of DD Y with chart of responsibilities for MI-8, Sigs 4 and Sigs 6 Dec 9; paper by Cdr Saunders of BP to Chairman of Y Committee on proposals for Service mobile Sigint units Dec 10; BBC asked to monitor Italian radio broadcasts for certain tunes believed to alert Italian agents to be prepared to receive broadcast instructions Dec 6; tactical Sigint reports from ME for Nov 1/2; C orders certain BP EP to be sent to MEW via Admiral Limpenny at HQ Dec 10; BP reports, Germans selling generating stations to Japan for North China Nov 28, CX/MSS/S.35 of Dec 5 Russian AF Orbat as seen from intercept of German Sigint comms

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