In actual fact the lab only looked at one flake of blood. There is nothing to state that they even examined the silencer for blood spatter.
Also scipio gives the false impression that the relatives were quite ignorant country folk who weren't bright enough to reproduce any kind of blood spatter. Apparently he likes to give the impression that he is the only one in the world who knows about such things. Well believe me the reletives were very knowledgeable about guns. They could probably tell you as much as master scipio can?
As usual Grahame is clueless. A substantial amount of blood was removed from the suppressor. The lab tested a flake of blood AS WELL as blood taken from the first several baffles. In addition the defense found microscopic blood on the first 8 baffles. Both the flake as well as the blood on the baffles was exclusive to Sheila's.
"In dealing with this evidence, the defence were limited by the evidence available from their own expert. They called no such evidence at trial but the material that they had obtained pre-trial has been disclosed in the course of this appeal. The defence had instructed Dr Patrick Lincoln, whose expertise in such matters was well known. On 29 April 1986, he visited the forensic science laboratory and examined the relevant material. He carried out tests on all seventeen baffles. The first eight plates all gave weak or very weak positive reactions for blood. There was no blood clearly visible to the naked eye...The other nine plates "did not produce any evidence for the presence of blood".
No questions were asked at trial of Mr Hayward to establish what part of the blood he had tested. The position was, however, known to the defence through their own expert Dr Lincoln. Dr Lincoln had seen the evidential material upon which the group testing results were based and agreed with the conclusions. He recorded that evidence in the course of his report of 19 September 1986. He said that Mr Hayward had "found a flake of blood trapped under the first or second baffle plate" and that it was this flake that was tested and produced the groupings A, EAP BA, AK1, Hp2.1
Dr Lincoln further recorded: "Mr Hayward states that he could detect visible staining on the "upper baffle plates" and that he swabbed these plates so that the blood was taken onto cotton material which could subsequently be used in grouping tests. On this material Mr Hayward successfully determined the ABO and EAP groups and showed the blood to be groups A, EAP BA."
He agreed with Mr Hayward's conclusion that the combination of blood groups revealed in his testing of the inside of the moderator could have come solely from Sheila Caffell but did not come from any one of the other individuals."
That is from the 2002 Appeal.
The blood they were looking at was believed to be back spatter specifically drawback which is back spatter theat goes into the weapon when the weapon is fired less than 2mm from the flesh.
They found a considerable amount of blood several inches into the suppressor. The blood typed the flake as well as blood obtained from the upper baffles. There was also microscopic drops that remained to be found by the defense expert even though the prosecution had removed all visible blood.
