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Presentation of reporting outcomes at government agency/CCC meetings.

Underground mapping/bore scoping for strata management design reports and TARPs.

Geotechnical assessments for civil/mining projects.

Geotechnical design and quality assurance testing/installation supervision of earth filled embankments, pre-loading of soft sediments for settlement control.

Design layouts of rock bolts, pre-tensioned and post-grouted cables/tendons for surface slopes and underground gate road support;

Site inspection of driven/bored piles into soil or socketed into rock for wharf and commercial structures.

Probabilistic and reliability analyses for risk/sensitivity assessments of model input parameters.

12 November 2008

DgS

Ditton Geotechnical Services

Employment History:

2007 - Present: Ditton Geotechnical Services Pty Ltd, Director

2005 - 2007: Strata Engineering Pty Ltd, Principal Geotechnical Engineer

2001- 2005: Strata Engineering Pty Ltd, Senior Geotechnical Engineer

2000-2001: Coffey Geosciences Pty Ltd, Senior Geotechnical Engineer

1994-2000: Coffey Geosciences Pty Ltd, Project Geotechnical Engineer

1991-1993: ACIRL, Graduate Civil Engineer

1989-1990: Lyall & Macoun Pty Ltd, Undergraduate/Graduate Civil/Water Engineer (included 6 months secondment to KinHill Engineers, Ultimo)

1988-1989: Concrete Constructions Pty Ltd, Undergraduate Civil Engineer

Major Mining Projects - Ditton Geotechnical Engineering P/L:

  • Tasman Mine, Seahampton: Subsidence management plan reports for total and partial pillar extraction panels beneath sensitive public spaces and cliff lines. Three-dimensional modelling of far-field effects in mountainous terrain.

  • West Wallsend Colliery, Killingworth: Subsidence management audit reporting on post-longwall

subsidence data for high profile public utility stakeholders and DPI.

  • West Wallsend Colliery, Killingworth: Coal Mine Roof Rating (CMRR) assessment of new

longwall mining area.

  • Ellensfield Mine, Moranbah (QLD): Subsidence predictions and impact assessment reports on

proposed longwall mining for EIS submission to QLD government.

CV for Steven Ditton

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