The main aim of the Cancer stream is to investigate whether study participants who were exposed to emissions from the Hazelwood fire, compared with otherwise similar people who were not exposed to emissions from the fire, have a higher incidence of malignant disease over a prolonged period of follow-up. This study will focus on particular cancers that are associated with the type of exposures from the Hazelwood fire. Data Linkage with the Victorian Cancer Registry held by the Cancer Council Victoria and the Australian Cancer Database held by the Australian Institute of Health and Welfare will provide this stream with data. Due to the length of time it can take for cancer to develop, linkage will take place in year three and year nine of the study.