(46) BTCM, 17 June 1941,10 July 1941,20 January 1942, 5 March 1942.
Best to Pitt, 21 February 1941; BTCM, 6 March 1941, NSWBBA.
(62) Report of a meeting between Major Wallace Ross and Walsh, 8 August 1941; box 200; BTCM, 22 April 1941, 11 October 1943, NSWBBA.
The popularity of these sessions resulted in the addition of Saturday morning sessions that commenced on 10 November 1941, BTCM, 5 August 1941, 7 October 1941, 2 December 1941; Walsh, Report, p.
The 1970s also saw the development of the Battelle Two-Curve Model (BTCM) as the basis to predict fracture control for natural gas and super-cooled liquid pipelines, which is still broadly used today.
When tougher steels became an issue as higher-strength grades emerged, the BTCM was found to underestimate arrest toughness, with a correction published in the late 1990s to address this for grades up through X70.