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GPPH & Associates select the best team of people with the skills required to the particular job.

These people include, but are not limited to, the following individual consultants.


Brian Baumhammer

Brian has more than 30 years’ experience in coal and metals operations across Australia and Indonesia in many different mining environments. Brian has worked as a consultant for 9 of the last 12 years.


Geoff N. Pitkin

Geoff has 40 years' experience in the New South Wales and Queensland coal industries with a background in open cut and underground operations, new mine development and the preparation of feasibility studies.

Dean Sorley

Dean has some 21 years experience in the coal mining industry in both underground and open cut. He has been working in the Australian coal industry since 1993 in various roles and in Mexico from 2008.


Michael A Pitkin

Michael is an experienced Engineer with specialisations in software design, database design, simulation and graphics.



James Leayr

James is a Mechanical Engineer (Honours) with a Masters in Mine Management and previous engineering experience in the energy sector.

Rod Hall

Rod has some 35 years industry experience and has been consulting to the coal industry for the last 5 years. He has held various positions as manager as well as being a director on a number of industry boards.


Greg Mattila

Greg has over 40 years experience in the Australian and international mining industry, with a particular focus on underground black coal mines. He has provided independent consultancy services to the mining industry since 1988.

John L Edwards

John has over 35 years experience in the coal and metalliferous mining industry. He was previously Chief Geologist with BHP Billiton’s operations in the Lake Macquarie area and has been consulting to the mining industry on geological matters since 2000.

Winton Gale

Managing Director Strata Control Technology Group (SCT). SCT Group provides leading consulting and research service to the mining industries.


Lynne Banwell

Lynne is a geologist with more than 25 years experience, who has extensive experience in both the coal and metalliferous mining industries.

Robert Byrnes

Robert has over 24 four years experience in the environmental assessment of mining developments, extractive industries, industrial proposals and public infrastructure projects.

David W Jones

David has over 38 years experience in the mining industry and his previous roles have included positions as Group Engineer for Coal and Allied and Chief Engineer for Coal Operations Australia.

Shaun Dench

Shaun is a principal consulting engineer of Dench Mining Consultants and has 20 years experience in open cut coal and metaliferrous mining operations.