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Eion Turnbull

Senior Expert, Sydney
Brings insight and experience from a variety of industries and cultural settings to help clients identify key drivers of value, galvanise action, and deliver superior, sustainable results

About Eion

Eion works intensively with clients to drive lasting improvements in operational performance. Drawing on a background in engineering and more than 35 years of consulting and executive experience, Eion offers hands-on implementation support to clients in the oil and gas, petrochemicals, metal processing, and mining sectors. He has particularly deep experience turning around performance in oil and petrochemicals using technical and organisational tools. With his cross-cultural experience, he adapts approaches that meet the unique needs of his clients.

His recent work includes:

  • supporting the safe and reliable restart of a large and complex metal-refining facility that had been shut down for nine months
  • creating and deploying a process to help a metal refinery better define operational roles and interactions, leading to clear ownership and accountability for crucial performance drivers
  • establishing momentum for the delivery of significant improvement in operational performance for a metal smelter by implementing routines at all levels that maintain focus on delivering value

Before joining McKinsey, Eion was a senior executive at Transfield Services, where he oversaw operations and quality efforts. Before that, he was a deputy chief executive at Bapco, the national oil company of the Kingdom of Bahrain. In that role, he not only oversaw the refining and marketing business but also led a 50 percent reduction in significant safety incidents. Eion is a member of the Australian Institute of Company Directors.

Published work

Overcoming limiting mind-sets to improve safety,” McKinsey & Company, May 2019

Past experience

Transfield Services
Chief Executive of Operations Support

Transfield Services
Chief Executive of Health, Safety, Environment, and Quality

Bahrain Petroleum Company
Deputy Chief Executive of Refining & Marketing

Essar Oil (India)
Refinery Head

Caltex Australia
General Manager, Refining

ICI Australia
Site Manager, Botany Petrochemical Complex


Cambridge University
Ph.D., chemical engineering

University of New South Wales
BEng, chemical engineering