Critical documents relating to a primary school jumping castle tragedy that killed six children are being obtained by a coroner ahead of an inquest.
Preparations for an inquest into the December 2021 incident at Tasmania's Hillcrest Primary School have been on hold for two years because of criminal proceedings.
Rosemary Gamble, operator of the company Taz-Zorb which set up the inflatable equipment, was in June found not guilty of workplace safety breaches.
Chief coroner Olivia McTaggart will on Wednesday provide a "detailed" update about the progress of inquest preparations.
Ms McTaggart had been prohibited from obtaining critical investigation documents until the appeal period in Ms Gamble's matter ran out, the coroner's court said in a statement.
The coroner is now in the process of obtaining the required documents, the statement said.
The inquest has faced several hurdles, including a legal stoush between the coroner and the state workplace safety regulator over access to documents prior to Ms Gamble being charged.
Chace Harrison, Jalailah Jayne-Maree Jones, Zane Mellor, Addison Stewart, Jye Sheehan and Peter Dodt were enjoying end-of-year celebrations on the school's oval when a wind gust lifted the castle into the air.
Ms Gamble was found to have in some respects failed to comply with her health and safety duties.
However, Magistrate Robert Webster ruled the incident occurred because of an unprecedented "dust devil" which was impossible to predict.
Ms Gamble could have taken further steps in relation to the castle's anchorage, he added, but even if she had done so it would have made no difference to the outcome.
In a separate court matter, Ms Gamble wants the state government to recoup her legal costs, which she has said could run into the millions.
At a hearing in early-December she told the court her legal expenses had to this point been covered by her insurer.
Lifeline 13 11 14
Kids Helpline 1800 55 1800 (for people aged 5 to 25)
