A 66-year-old Leschenault man has died at BHP Billiton's Worsley alumina refinery near Collie, in WA's South West.
Collie police senior sergeant Mike Dean said they were investigating the death of a man who fell down an elevator shaft about 5pm on Monday.
BHP Billiton Worsley Alumina refinery near Collie.Credit: Bunbury Mail
Colin Whitton, 66, was an electrician at the site.
No suspicious circumstances are involved.
In a statement, a BHP spokesman confirmed the death, which occured at the refinery's powerhouse.
"A full investigation is underway," he said.
"We extend out deepest condolences and support to the deceased's family, friends and colleagues at this difficult time."
This is the first fatality at the refinery since it began operations in the 1980s and the third mining death in WA this year.