A low-level radioactive waste (LLRW) facility began operation at Siu A Chau in July 2005. Low-level radioactive wastes which had previously been stored in disused tunnels, two factories and five hospitals were subsequently transferred to the Siu A Chau facility. Part of this waste was relocated from the disused Mount Parish air-raid tunnels at Queen's Road East, in Wan Chai. The 55 m3 of LLRW stored there had raised objections. The opening ceremony of the facility was held in June 2006.