The children's father was found dead at the foot of a 60ft (18m) cliff at the quarry with a fractured skull and other injuries consistent with a fallfromheight.
Mr Fuller, who had a degree in molecular biology, was found dead at the foot of a 60ft (18m) cliff with a fractured skull and other injuries consistent with a fallfromheight.
This meant that for the drop-test we were able to let the Panasonic free-fall from a height of three feet, while the GammaTech was dropped from a somewhat less realistic (in terms of likely real-world falls) one foot.
Following investigation, "poisoning, sexual assault and homicide had been ruled out as causes of death", the statement said, describing her death as an "autonomous fallfrom a height".