In the first tranche of emails 107 former associates were contacted,theHerald understands,59 of whom were men and 48 women. The court is seeking to track down other associates.
The spokesman said Dr Thom was"not conducting a further investigation and will not be".
"What,if anything,comes of those conversations is hypothetical at this point,"he said.
In a statement on Monday,High Court Chief Justice Susan Kiefel said the six women at the centre of Dr Thom's investigation"have been believed"and"we're ashamed that this could have happened at the High Court of Australia".
Mr Heydon,who was appointed to the court in February 2003 and retired when he reached the mandatory judicial retirement age of 70 in 2013,has vehemently denied wrongdoing.
Mr Heydon's lawyers,Speed and Stracey,said in a statement:"In respect of the confidential inquiry and its subsequent confidential report,any allegation of predatory behaviour or breaches of the law is categorically denied by our client."
"Our client says that if any conduct of his has caused offence,that result was inadvertent and unintended,and he apologises for any offence caused,"the statement read.