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12 November 2008

DgS

Ditton Geotechnical Services

  • Narrabri Coal Operations, Narrabri: Subsidence predictions and impact assessment reports on

proposed longwall mining for EIS submission to NSW Department of Planning.

  • Market town Extension Project, Newcastle: Development of calibrated numerical and analytical models for deign of subsidence control grouting for a new high rise building development above abandoned coal mine workings at 65 m depth of cover. Preparation of a comprehensive risk assessment was also completed for review by MSB and third party auditors.

  • Apollo Motel Extension Project, Charlestown: Worst-case subsidence predictions for pillar run scenario in old bord and pillar workings at 150 m depth of cover. Subsidence impact parameter contours provided to design high-rise residential and office towers.

  • Ridley St Project, Charlestown: Worst-case subsidence predictions for pillar run scenario in old bord and pillar workings at 150 m depth of cover. Subsidence impact parameter contours provided to design high-rise residential and office towers.

  • Minmi Residential Subdivision: Worst-case multi-seam subsidence predictions due to collapse of old bord and pillar workings in the Young Wallsend and Borehole Seams. The project involved the development and calibration of SPDS influence function software to historical RT and subsidence reports by colliery survaeyors.

  • Dendrobium Mine, Mount Kembla: Third Party Triennial Audit and Review of Subsidence Management Plan outcomes for several longwall panels beneath cliff lines, creeks and power supply easements in the Lake Cordeaux Catchment Area.

  • Berrima Colliery, Centennial Coal: Subsidence predictions for pillar extraction panels and an assessment of subsidence protection zones beneath rural residential properties/large farm dams for submission with the Subsidence Management Plan to the DPI.

Major Mining Projects - Strata Engineering (Australia) P/L:

  • Cataract Tunnel, Appin - Mine subsidence impact assessment due to proposed longwalls. Tunnel support design and preparation of quality assurance testing specification. Project engineer for quality assurance inspections and testing (2004 - 2 months).

  • West Wallsend Colliery - Mine Subsidence predictions and impact assessments for LWs 27 through to 48 (2003-2006) for SMP Report Submission. On-going provider of subsidence review / stakeholder meeting presentation services to-date.

  • North Wambo Colliery - Mine Subsidence predictions, impact assessments for LWs 1 to 10 (3 months, 2005) for SMP Report Submission. Multiple Seam predictions for overlying and underlying seams were required.

  • Moolarben Coal Mines - Mine Subsidence predictions, impact assessments for LWs 1 to 14 (3 months, 2006) for Part 3A Environmental Impact Assessment Report Submission. Power Point presentation of study outcomes at Community Consultation Committee and Department of Planning Independent Hearing and Assessment Panel meetings.

  • Donaldson Coal - Mine Subsidence predictions and impact assessments for pillar extraction panels

(3 months, 2006) for Part 3A Environmental Impact Assessment Report Submission.

  • Tasman Mine - Mine Subsidence predictions, impact assessments for pillar extraction panels (3

months, 2001) for Part 5 Environmental Impact Assessment Report Submission.

CV for Steven Ditton

3

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