Phytophthora cinnamomi Rands is present in many areas prior to mining by Alcoa of Australia, Ltd. To reduce the risk of spreading this pathogen to non-infected areas the company employs a range of control measures at all stages of mining. There is a need to develop a treatment to eradicate P. cinnamomi from relatively small volumes <60m3) of soil. This study examined the efficacy ofCuS04 as a fungicide for rapid death <2h) of P. cinnamomi in topsoil and gravel soil taken from a mining area