The maker of a jumping castle at the centre of the Hillcrest Primary School tragedy has questioned why it has been involved in lengthy investigations. Advertisement AdvertisementAdvertisement AdvertisementRosemary Gamble, the operator of Taz-Zorb which set up the equipment, was in June 2025 found not guilty of criminal workplace health and safety breaches. The coroner and Tasmania's workplace regulator have battled over access to documents (Grant Wells/AAP PHOTOS)"The families have been waiting several years," Mr Hamilton said. Preparations have faced several hurdles, including a legal stoush between the coroner and Tasmania's workplace regulator over access to documents. Mr Chen gave evidence at the criminal hearing, saying he couldn't recall exactly how many pegs were supplied with Mr Gamble's castle purchase.