The ratio of mining deaths to those employed in the sector has fallen, a review of all WA mining fatalities over the past 13 years shows.
The Department of Mines and Petroleum is currently reviewing all fatalities in the sector, The ABC reports.
Lead technical investigator Allen Holmes said while the amount of people employed in the industry has swelled to about 100,000 people in WA, the number of deaths has dropped.
He said safety procedures are reducing the amount of mining incidents.
“Although there has been an increase in the number of people, the injury statistics have been improving as the years go by," Holmes said.
"The rate of which people were being killed 50 years ago and 25 years ago was much worse than it is now, and certainly in the period of the 90s for the previous review there were between eight and 10 people being killed every year in the mining industry for a much lower number of people.
“Whereas in the review period I looked at, the average was four."
WA recorded its first mining death in two years when a worker was killed whilst working at Fortescue Metals Group’s Christmas Creek mine in August.