North Goonyella Fire MRE 18th September 2018. “prior to any attempt to all attempts to bring the event under control should exhausted without major change seal the TG chute with rocsil  to the existing ventilation system and thorough risk analysis process be completed.”

MRE – North Goonyella – 18.09.2018.pdf

Today, Tuesday 18 Sep 2018, at 8am, Inspectors Richard Gouldstone and Geoff Nugent attended a meeting at North Goonyella Mine to discuss the status of the high CO in 9N TG. Inspectors were met by Marek Romanski, UMM.

Meeting

Attending the meeting was;-

Mr Marek Romanski – UMM

Mr Peter Baker – Peabody Operations Manager

Mr Nev Impson – Compliance Manager

Mr John Pearson – SSHR

Mr Robin Hall – Business Development Manager

Mr Gavin Shields – SHE Manager

Mr Steven Stook – TSM

Mr John Anger SSE

The meeting discussed the following details Last 24 Hours

Continued monitoring gases and injection of inert gas as per plan

• Drilling GN2696 (grout and redrill until closer to seam target 30-50m) @ 224m

05:00

• Drilling GN2695 (grout and redrill until closer to seam target 30-50m) @ 350.3m casing to 348m to be done

e Floxal #5 down with compressor issue 11:45 to 22:00

• Inject UIS CH4 into GN1991 from 9am started with 400 IIS, 06:00 3801/s

QMRS foam off and on standbye

• Prepping pad for GN2697 TG chute

Current Status o Gas readings for the previous 24 hours were provided and discussed

Tube 24 Stable and inert

Tube 29 remains at 637ppm CO

Tube 24 indicates an increase of CH4 replacing N2 believed to be generated by injection of CH4 at IOS UIS 3ct LW9 TG.

Connect Floxal #4 to GN2695 approx 12:00

• Continue with inertisation as per plan attached

Continue with drilling GN2696

• Set-up DR 1218 for TG chute road plug borehole and commence drilling
• Mobilising Wilsons equipment to inject plug in TG chute TBC RA in Mackay today

Plan for the next 24 Hours o Set up Narrabri floxal phase 2 module

• Complete repairs on floxal unit #5 compressor
• Mobilising Liquid nitrogen tanker ETA Wed
• Reducing Bleeder Fan by 200pa will balance pressure differentials across the goaf preventing the drift of inert gasses to the bleeder all agreed this could only assist plan A — left to IMT to decide
• Practical peer review of strategy will be arranged
• Review product availability of fly ash etc
• Review potential for use of tracer gas analysis
• Determined location of next boreholes directly between GN2470 and GN2693, also 50m in the goaf from 4ct MG seal

It was reiterated by the Inspectors with all present that prior to any attempt to all attempts to bring the event under control should exhausted without major changeseal the TG chute with rocsil  to the existing ventilation system and thorough risk analysis process be completed.