‘Potentially hazardous material’ found in storeroom at Sydney’s Castle Hill high school

Stock image of a science class. The material was found in a science storeroom at Sydney’s Castle Hill high school and it was reported the substance was in a box labelled ‘yellowcake’. Photograph: Horizon International Images Limited/Alamy

A “potentially hazardous material” has been discovered at Sydney’s Castle Hill high school.

The New South Wales education department said in a statement it discovered “a potentially hazardous material in a locked science block storeroom” at the school on 30 August 2023.