A leading dust-control expert is warning Aussies to be aware of potentially deadly dust in workplaces you might not expect. It comes after the Australian Workers Union last week revealed the diagnosis of Joanna McNeill, a 34-year-old Melbourne mother of two, whose silicosis was detected through an X-ray check when she returned to work from maternity leave. Ms McNeill said she worked at Boral Quarries in Melbourne s east, doing administrative tasks in an office 90 metres from a crushing plant. Managing director of de-dusting equipment specialist Mideco, Melton White, said the need for frontline workers in mining and quarrying to wear personal protective equipment had become better understood in recent years.