1. Fall of Ground Strategy
Trigger Action Response Plan as Tool for prevention of Fall of Ground Incidents
Tuesday, April 23, 2019
Obed Tsetsewa

2. Technology
Technology is the making, modification, usage, applied activity or behaviour, and knowledge of tools, machines, techniques, crafts, systems or methods of organization in order to solve a problem or improve a pre-existing solution to a problem. It can also refer to the collection of such tools, machinery, modifications, arrangements and procedures
Wikipedia

3. CONTENTS Fall Of Ground Incidents Major Hazard Management Plan (MHMP)
Trigger Action Response plan (TARP)
Available technologies

4. TRIFR TRENDS
How do we compare to previous years?

5. FALL OF GROUND INCIDENTS
History:
10 fatalities since 1998
FOG incidents involving 4 fatalities
High severity incidents
FOG top major hazard

6. 2 FOG Injuries per million tons
ACCIDENT STATS
2 FOG Injuries per million tons

7. Major Hazard Management Plans
Tuesday, April 23, 2019

8. MAJOR HAZARDS Identified 7 Major Hazards within our operations:
(those hazards we know will cause fatalities on the mine)
Falls of Ground
Trackless Mobile Machines
Conveyor Belts
Electricity and Isolation
Ventilation
Winches and Rigging
Track bound Machinery

9. MAJOR HAZARD MANAGEMENT PLAN (MHMP)
Inter-departmental effort MHMP
Team Leader for each MHMP
Champion for each site
Leading indicators
Monthly audits of MHMP by Site Champions
FOG Data base kept by Team Leader
Annual audits by Team Leader
ICAM investigations done on all incidents relating to MHMP

10. KEY LEARNINGS Should not be an additional procedure.
Should pull the key controls together into a single document.
Must be regularly audited to give assurance of the current controls.
Must produce leading indicators (triggers).
Must assign responsibility for everyone involved in the MHMP.
Must establish a rigid structure of reporting/communication for each site.

11. FALLS OF GROUND: key controls
Reporting
Hazard/Q-Rating and GPR (Actual vs. Planned)
Planned Task Observations (Actual vs. Planned)
% substandard support and of pillars robbed in a section .
Panels stopped by TARP (High Risk Panels)
Fall of Ground Register
Controlled and uncontrolled falls of ground
Frequency of falls and Fall out sizes
Fall out thickness
Review
Review of the risk assessment every 6 months
MHMP key controls reviewed once a year or after incidents by review committee.

12. Trigger Action Response Plan (TARP)
Tuesday, April 23, 2019

13. WHY WAS TARP INTRODUCED?
Multiple fatalities at Maloma colliery.
Fatality at Kroondal Mine.
A serious injury at Helena Mine.
Several near misses.

14. DEVELOPMENT OF THE TARP SYSTEM
Involvement of Experienced Mining Personnel and Strata control Experts.
Standardizing Geotechnical and Geological Terminology.
Involve the training department at all phases
Development of learning materials i.e. Training( VRT)

15. T.A.R.P. - Overview
System devised to dictate a level of response to underground conditions.
Ground conditions will determine the task team required.
Strategy to minimize rock falls and part of MHMP for ground control.
Three rating conditions used:
Normal - Green
Level Yellow
Level Red
Risk Based approach and escalates the decision making hierarchy

16. LEVELS OF RESPONSE TO TARP

17. TARP FIELD CARD

18. TARP RED TRIGGERS

19. TARP RATING IN PRACTICE
FAULT
DOME
WEDGE
PANEL BARRICADED AND RATED TARP RED BY MINER

20. TARP SYSTEM: Closing the loop

21. Available Technologies
Tuesday, April 23, 2019

22. Available technology: Virtual Reality Training

28. IN CASE A WRONG ANSWER IS CHOSEN

32. TARP: Key fundamentals
The system must be simple and robust.
The system must be adequately resourced both in terms of personnel, technology and equipment.
The focus of TARP should be on prevention and control through early detection.
Setting triggers requires detailed knowledge of what is normal.
TARP need to be regularly reviewed and revised as necessary and experience dictates.
David Cliff-Tips, Tricks and Pitfalls

33. END