Graeme Matson

Occupational Hygiene Consultant, OHMS Hygiene

I am an Occupational Hygiene Consultant for OHMS Hygiene and have been for the last 5 years. I am a Provisional member of the AIOH with a Bachelor of Health Science and am currently in my final semester of the Occupational Hygiene Masters course at RMIT University. Over the last 5 years I have worked  with a range of clients within the mining sector and the oil and gas industry, which have provided many interesting experiences allowing me to continually develop as an Occupational Hygienist.


Mining regulations in Western Australia require that undiluted diesel engine exhaust is to be tested in underground mines. As a minimum this shall be at intervals of no more than 250 hours, or 1 month if no hour meter is present. As consultants OHMS Hygiene have been carrying out monthly diesel exhaust emissions testing for 13 sites across Western Australia between 2015-2020. This paper will review the de-identified data to determine trends in why sites are exceeding the limits for EC (Elemental Carbon) and NOx (Nitrogen Oxides), and what sites have done to manage the diesel engine exhaust emissions. This research will help organisations understand how they can reduce their diesel engine exhaust emissions and therefore prevent exposure to their underground miners.

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Thursday 3rd Dec Day 4

A 5-year cross sectional review of underground vehicle exhaust emissions (elemental carbon/nitrogen oxides) using de-identified data from 13 Western Australian underground mine sites.