wona pit wall failure€¦ · powerpoint presentation author: catherine zemelka created date:...
TRANSCRIPT
WONA PIT WALL FAILURE
LOCATION OF WALL FAILURE IN THE WONA PIT
2
Wona Pit
2.2 km Wona Pit Phase 3
800 m
Old Wona Pit
1,400 m
Failure
Work
Zone
Work
Zone
Ore +
Waste
Ore +
Waste
Reserve pit limit
2
LOCATION OF WALL FAILURE IN THE WONA PIT
3
Wona Pit
2.2 km Wona Pit Phase 3
800 m
Old Wona Pit
1,400 m
Failure
NORTH VIEW OF WONA PRINCIPAL RAMP
4
FAILURE
PRINCIPAL RAMP
EAST VIEW OF WONA PIT – PHASE 3
5
150 m
60 m
130 m
5,330
5,280
5,270
5,260
5,240
5,220
WONA NORTH PILLAR
6