It will resume at 10am tomorrow.
Mr Powell has so far gone through 57 out of the 98 critical fibres in this trial.
Mr Powell has moved onto the two grey polyester fibres found in Ciara’s hair mass known as VW1.
The state alleges the fibres originate from the seat inserts of a 1996 Holden Commodore VS Series 1 station wagon – the same make and model driven by Mr Edwards at the time of the murders.
The fibres are considered part of the ‘grey polyester, group 1’ which also includes 20 fibres found in Jane’s hair.
Mr Powell said the two fibres from Ciara’s hair were each compared against three fibres taken from different areas of Mr Edwards’ former car and deemed to correspond.
They were also compared against two grey polyester fibres recovered from Jane’s hair and found to match.
Mr Powell has now moved onto the six blue, non-delustered rayon fibres found within Ciara’s hair mass, VW1, in 2018.
Justice Hall has remarked he is “quite excited to see we’ve gone onto something different” after going through the blue polyester fibres for the past two days.
The six fibres are also alleged to have come from the Telstra trousers – with non-delustered fibres being found in the weft (horizontal) weave of the fabric.
Mr Powell has gone through all six of the fibres – concluding they match fibres found on a pair of Telstra trousers from the mid-90s.
Mr Powell has resumed giving his evidence.
He has so far gone through 23 of the 25 blue polyester fibres found in Ciara’s hair sample, VW1 in 2018. The fibres were among 341 fibres recovered from the exhibit.
Mr Powell is continuing with the final two – which he said both matched a reference blue polyester fibre found on Ciara’s T-shirt, and fibres from a pair of Telstra work trousers from the mid-90s.
One of the fibres was also compared in 2019 to a blue polyester fibre recovered from vacuumings of the rear seat of Mr Edwards’ former work car, and found to match.
The other was compared to two blue polyester fibres recovered from the driver’s seat bracket and carpet vacuumings from under the rear bench seat and was found to differ in thickness.
Justice Stephen Hall has asked if most of the blue polyester fibres recovered from the car were thicker than those found in Ciara’s hair.
Mr Powell has agreed, saying most were thicker, but that some did correspond, and that the Telstra trouser warp fibres (vertical weave) were typically thicker than the weft fibre (horizontal weave).
He said the ChemCentre was unable to tell whether blue polyester fibres taken from the car were weft or warp yarns.
It will resume at 2.15pm.
Mr Powell has resumed going through the blue polyester fibres found in Ciara’s hair exhibit, known as VW1.
He has so far detailed when and where 15 out of the 25 fibres were found.
He is continuing and has gone through the next eight fibres, which were recovered in 2018.
Each was found to match the blue polyester reference fibre found on Ciara’s T-shirt, and fibres from a pair of Telstra work trousers from the mid-90s, when tested during the following year.
Two were compared against two blue polyester fibres recovered from the shorts of Mr Edwards’ 1995 rape victim and also found to match.
Another was compared against a blue polyester fibre recovered from the driver’s seat bracket of Mr Edwards’ former work car, and found to differ in thickness, but correspond in other property areas.
It will resume at 11.45am.
ChemCentre fibres expert Rees Powell has resumed going through each of the state’s 98 critical fibres one-by-one.
He is up to the blue polyester fibres found in Ciara’s hair mass, known as VW1.
The fibres allegedly belong of a common fibre group called ‘blue polyester 4′ – which is also linked to Jane’s murder and Mr Edwards’ rape offence.
The state alleges the fibres originate from Mr Edwards’ Telstra-issued work trousers, which were dyed in a unique ‘Telstra navy’ blue.
Mr Powell, last week, had gone through the first eight out of 25 blue polyester fibres found in exhibit VW1.
Each fibre is usually compared to each other using five types of analysis – bright-field microscopic imaging, polarised imaging, fluorescent (UV and green-fields) imaging and a charting of the fibre’s properties on a graph showing its unique peaks and troughs.
Mr Powell is continuing with the remainder of the fibres today.
Of the next seven blue polyester fibres Mr Powell has gone through, he said all but one matched a reference ‘blue polyester 4 group’ fibre taken from Ciara’s T-shirt, and fibres taken from a pair of Telstra trousers from the mid-1990s. One, was only considered ‘similar’ due to a variation in thickness.
One was also compared to two blue polyester fibres recovered from Mr Edwards’ former work car driver’s seat bracket. The fibres from the work car were found to be thicker than those recovered from Ciara’s hair – however they corresponded in every other way – leading Mr Powell to conclude the fibres differed but could not be excluded as coming from the same source.
He said when the vehicle fibres were compared directly to a pair of Telstra trousers, they matched.
Justice Stephen Hall has asked how that is possible, and Mr Powell has explained the fibres from the Telstra trousers can slightly vary in thickness.