University of Sydney Apr 29 2026 The responses to a national survey published today have revealed tunnel construction workers across Australia say they face significant exposure to silica dust, a hazardous dust that can cause incurable diseases like silicosis and lung cancer. The University of Sydney-led research, published in the  Australian and New Zealand Journal of Public Health,  is based on a survey of 290 tunneling industry workers and industry professionals between September 2024 and