Activists launch protests on the anniversary of Aung San Suu Kyi’s house arrest.
Kanowna Belle, 20km north-east of the mining town of Kalgoorlie, is said to contain 14 million ounces of gold.
In 2006, 17 miners were working in the Beaconsfield gold mine on the southern Australian island of Tasmania when it collapsed.
Fourteen escaped, one was killed, and the remaining two were rescued after surviving for two weeks about one kilometre underground.
Mining accidents in China and South Africa killed at least 40 people this month.
Sixteen Chinese coal miners were found dead after being trapped underground for more than 30 hours, while South African police recovered the dead bodies of 23 miners after a fire in a gold mine.