sentences:  During this period, he was tasked with disposing of German acoustic mines in a number of British harbours.On 13 August 1943, Goldsworthy defused a German mine in the water off Sheerness using a special diving suit which he and a colleague had helped to develop.On 17 September, in conjunction with another Australian, Lieutenant Commander Geoffrey Cliff, he removed a two-year-old mine from the Coal Barge Wharf at Southampton.