MATES in Construction has been well evaluated and been found to; have high social validity within the construction industry, improving knowledge around suicidality as well as promoting increased help seeking and help offering. The program has been associated with reduction in suicide rates in the Queensland construction industry against the state trend over the same period. This project will test the transferability of MATES in Construction to the mining industry as an ongoing industry based and run mental health and suicide prevention program. Program evaluation will focus on showing improved mental health, help seeking and help offering as well as improved mental health literacy amongst the workforce. The project will also seek to show reduced stigma around suicide and mental health issues generally across the industry.