NEWLANDS HIGHWALL FAILURE OCT 2015

2014 EVENT TIMELINE 

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Risk Assessment for intro of Highwall mining completed 

25/9/2014

Risk Assessment for Strata Failure completed 

8/7/2014

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NEWLANDS HIGHWALL FAILUREOCT 2015

2015 EVENT TIMELINE 

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2015Jun Jul Aug Sep Oct

RISK ASSESSMENT ‐ HW MINING BANROCK B PIT 

14/9/2015

PTM RAMP B BANROCK PANEL 2 ENTRIES 1‐10

24/9/2015

INCIDENT DATE 

16/10/2015

SITE INSPECTION 

27/10/2015

GLENCORE COAL GEOTECH DESIGN REPORT 

29/6/2015

PTM RAMP B BANROCK PANEL 1 ENTRIES 1‐10

16/9/2015

PTM RAMP B BANROCK PANEL 3 ENTRIES 1‐10

1/10/2015

SITE INSPECTION 

26/10/2015

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Radar continues to indicate deformation across the highwall. Three zones in particular should still be classified as most likely failure locations

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Area inbye of stacker and cone of coal considered a red hazard with no entry at the moment

Green area compromising the stacker and the cone of coal is considered a green area for the removal of the coal and stacker

Amber area immediately north of the stacker of to the small loader is considered an amber risk with risk assessment and spotter required for entry

Area north of the small loader is considered a high risk area due to deformation continued to be monitored from the radar. This area would be considered an amber risk zone one a bund has been dozed in place in a systematic manner and once the three red hotspots on the radar have indicated a reduced deformation and once the second radar has been implemented in the north. The method of bunding would be determined through risk assessment.

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