[It was on this date in 1989 that the fragment of circuit board that was used to link the Lockerbie bomb to a MST-13 timer and hence to Libya was discovered among material that had been collected in January. Here is what Dr Ludwig de Braeckeleer says on his PT35B website:]
Fragment of circuit board is found in PI/995 by Dr Hayes on 12 May 89, according to page 51 of Dr Hayes notes. The police production logs for PT/35 record it as having been found by Dr Hayes at RARDE on 12 May 1989. In his evidence (p2608) Hayes said he had no memory of finding the timer fragment independent of his notes. In his chapter 8 Crown precognition (“CP”), Hayes said his recollection was that he worked alone when carrying out examination of debris, but that he occasionally called Allen Feraday in when something of interest was found. Feraday in his chapter 8 CP referred to the discovery of PT/35 and PT/2 and said that he remembered when this was done. He stated that although Hayes was carrying out the examination, he thought Hayes invited him in to see the pieces embedded in PI/995 before Hayes removed them. He stated that Hayes knew he would be interested in what Hayes found, and he therefore remembered that PT/2 and PT/35 were extracted from PI/995. In his chapter 10 CP Feraday does not specifically mention his memory of PT/35’s extraction. He states that initially the main concern was with the pieces of cassette recorder manual that were found in PI/995, as they appeared to support the identification of fragments discovered earlier, and it was only at a later stage that the potential significance of PT/35(b) became clear.