Western Australian underground mines over the decades have increased in productivity and depth requiring more sophisticated controls. Concurrently, airborne contaminant exposure standards have become more stringent. Mine operators are required to review and adapt the controls for these changing risks.Contemporary engineering practices and an informed workforce are key aspects enshrined in the objects of the Mines Safety and Inspection Act 1994.The key note will highlight: Ventilation initiatives undertaken by the department to engage with mine operators which led to issuing Mine Safety Bulletin 151; The progress towards the development of a ventilation code of practice; Requirements for a Health and Hygiene Management Plan to control health hazards to miners; Projects undertaken to address emerging issues in diesel exhaust emissions to characterise nano Diesel Particulate Matter (nDPM), through the Mining Industry Advisory Committee (MIAC) working group, sponsored by DMIRS and Minerals Research Institute of Western Australia (MRIWA); What the future holds with respect to new legislation (Work Health and Safety) and competency requirements for the role of ventilation officers in WA. *This is an abstract only. No full paper was prepared for this abstract.* CITATION:Chaplyn, A, 2019. Ventilation and workers health: a regulators perspective, in Proceedings Australian Mine Ventilation Conference 2019, p 2 (The Australasian Institute of Mining and Metallurgy: Melbourne).