Brandspruit Colliery Sasol Mining

Brandspruit CollierySasol Mining

CM retrieval from goaf Section 17

SACMA 15 November 2007Presenter: Johan Steyn

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THE FIRST PICTURE OF THE GOAFED CM



Presentation content1. Pillar extraction at Sasol Mining2. Incident Section 17 Brandspruit 2# and cause3. Safe retrieval4. Repair on Continuous miner5. Preventative actions and learning's6. Acknowledgements



1 2 3 4 7 111095 6 8 12 1413 15 16

1. Pillar extraction Sasol Mining§ Cutting Sequence and tramming route (Stooping)



NEVID Extraction method (Neels Joubert and David Postma)



2. Incident summary and cause 8 June during Day shift (9h30) the CM was buried in the goaf14 June during Afternoon shift (20h00) the CM was recovered withdamages14 shifts to remove the CM – Loss in productionCM repair from 15 June to 20 August underground in production

CAUSE of incident: Horisontal stresses and floor contours (See plans)





What happened



What happened



What happened



What happened



What happened



What happened



What do we know



3. Safe retrieval of CM

LoadingLoading

DrillingDrilling

BlastingBlasting

LoadingLoading

DrillingDrilling

BlastingBlasting

HookingHooking

PullingPulling

etcetc



Loading work with LHD’s



Drilling with stonework team facedrill



At last some sign of CM



Huge roof fall

Brow supported with roof bolts Brow supported with roof bolts Installed with new generation Installed with new generation roof bolterroof bolter



Expose Conveyor boom and install sticks.



Change of plan. Safety risk!!Change of plan. Safety risk!!



Build canopy in segments and push in place with LHD



Continuous construction work

Price for timber and labour Price for timber and labour -- R108,000R108,000Total price including steel Total price including steel –– R200,000 R200,000



Pin the canopy with Hilti drill



Put “tandetrekker” in position



Pull CM



No movement and breakage of chain

160t160t



More blasting work



Twistdraai Colliery assist with 2nd

“Tandetrekker”



Twistdraai team

PietPiet DoctorDoctor



Brandspruit team

LoodLood

JohanJohan



At last!!

170t + 180t = 350t170t + 180t = 350t



Damage on CM



The “garage”



Johan Pretorius investigating the CM

““TierTier””



4. Repair of CM1.1. Original quote Original quote ––

R4.7millionR4.7million

2.2. Repaired in house at Repaired in house at Sasol Mining Central Sasol Mining Central workshopsworkshops

3.3. Repair work (Left panel, Repair work (Left panel, scrubber and box, frame scrubber and box, frame repairs, piping and repairs, piping and wiring, conveyor boom wiring, conveyor boom and booster pump)and booster pump)

4.4. Cost of repair R780 000Cost of repair R780 000

5.5. Team dedication with Team dedication with workshop facilities and workshop facilities and supportsupport

6.6. Involved learner artisans Involved learner artisans for experiencefor experience



5. Preventative actions and learning

5.1 5.1 MindmapMindmap to take determine focusto take determine focus



5.2 Changes in approved stooping plans to improve risk managemen5.2 Changes in approved stooping plans to improve risk managementt

BEFOREBEFORE



AfterAfter

1.1. Expected Expected phasesphases

2.2. NorthNorth--south south stressesstresses

3.3. Pillar colours Pillar colours in expected in expected high riskshigh risks



Phase 2Phase 2



1.1. StressesStresses

2.2. Description Description of marked of marked pillarspillars

3.3. Leave red Leave red pillarspillars



Additional preventative actions

Adapt pillar centre's to do more development and less stooping per pillarPro active canopy and tools required in case of an incidentReflective “policemen”. Trigger when roof starts to take pressure

Learnings

Pro active measures better than cure.Never be to proud to ask. Get 2nd “tandetrekker” immediatelyWe learn everyday by adapting stooping plansKeep the engineer calm





A BIG thank you to the following people for their help

Jurie Blignaut (Waypoint)

Johan Swanepoel

Johan Steyn

Johan Pretorius

Johan Grabie

Gert Venter

Gerrie du Preez

Gerhardt vd Merwe

Frikkie van Eeden

Frik Grobbelaar

Frans van Dyk

Frans Moolman

Frans (Artisan 71)

Frank Richards

Deon Annandale

Dawie Combrink

David Postma

Basimane Motlhabane

Awie Richter (LM)

Ash Boodhram

Alex Thompson

Abraham Ramaele

Lood Lewies

Lipson

Leon Wolmarans

Lazarus

Khabela (CM)

Royston

Robert Nkale

Rita Steenkamp

Pieter du Preez

Piet Shabalala

Philani Mahaye

Petros (Lamproom)

Patrick Fumo

Moses (Konstruksie)

Mike Fourie

Martin Steenkamp

Mark Jacobs

Marius Coetzer

Mamzi (Belde)

Lucky (Eimco)

Willie Smit

Willie Phyffer

Willem Page

Wally Claassen

Tinus Roos

Tinus (App)

Steven (App)

Shane Membrey

Sakkie Roux

Pacule

D Nel(59)

R Cronje

Z Naude

M Gelderblom (26)

W v d Westhuisen (47)

R Hendriks (39) Salvador

Petrus

Vusi 03

Anton

Fabio

Andile

Clemont

Monabisi

Johannes

Joseph

Lappies

Jose

Inama 03

Wellington

Samuel

Ephion

Chief

Zakhele

Macamo

Kleinboy

Daniel

Luwiza

Daniel

Jose

Isaja

Piet & Doctor from Piet & Doctor from TwistdraaiTwistdraai

Jurie Botha (Waypoint)Jurie Botha (Waypoint) Sasol Mining Central Sasol Mining Central workshopsworkshops



TEAM WORK with Support and Help from our Heavenly Father



Vision of Brandspruit Colliery:

Together we will BEAT our Safety (SHE) and Continuous Improvement (CI) targets

Beat = Rhythm of our production sections:

7 (7) loads per hour per Shuttle car (BH)

Zero Harm, Weekly Safety Topics, Monthly Shaft

Communication, Daily Stats, Non Conformance Meeting,

News Flash Communication, Monday Accident Presentations

Safe Making Behaviour

2050 tps for Shuttle car production sections

1700 - 2100 tps for Battery Hauler production sections





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Brandspruit Colliery Sasol Mining