"It’s been our pleasure to work with some of the world's largest and most successful mining companies on projects all around the world."

Dr Brett King
COMET Strategy

COMET Strategy is a global software and training company delivering innovative mining solutions which maximise total project value (NPV) by simultaneously exploiting synergies between operating strategies.

Specialising in optimal multi-policy scheduling for long-term and strategic planning, COMET Strategy’s Optimal Scheduler is used by the world’s largest mining companies in surface and underground mines.

With more than ten years of experience, and recognised as a global leader in mining optimisation, COMET Strategy is guided by the constantly changing needs of our clients.

Our approach to business is simple - create win-win outcomes that add value and exceed expectations.

We approach every client individually and every project with a view to facilitating the transfer of knowledge, skills and competence necessary to undertake the mine planning function effectively.

COMET Strategy works in partnership with every client and every project to deliver uniquely valuable solutions via the primary principles of:

  • Competence
  • Integrity
  • Quality
  • Responsiveness
  • Collaboration

Our Team

Dr. Brett King



Brett King is the Founder and CEO of COMET Strategy.

A respected global figure in the field of optimisation application and research, Brett has more than 25 years of experience covering operational and strategic roles in both small and multi-national companies. Prior to establishing COMET Strategy, Brett was a Senior Princial with Rio Tinto Technical Services group and, based on the pioneering work of Ken Lane, was responsible for the development and implementation of optimisation principles and associated cash flow grades in the Rio Tinto optimisation system COSMOS.

A widely published author and popular conference speaker, Brett holds a PhD from London University Royal School of Mines on optimal mine scheduling policies, as well as a Bachelor and Masters degree in mining engineering.

Brett is a keen runner and triathlete.

Connect with Brett on LinkedIn via COMET Strategy page.

Carlos Espejel

PhD (Grade Engineering., ongoing), M.Eng., B.Eng.

Strategic Planning Specialist

Carlos has a passion for pushing the boundaries of strategic planning.

From his practical experience working in the mining industry, Carlos saw the opportunity to apply research concepts to improve the value of mining projects now known as Grade Engineering with the CRC Ore project. Carlos's PhD was not even published when he first applied it to the Anglo American Los Bronces project in Chile in 2016. This case demonstrated significant value for the project and is now planned to be implemented at other major mining operations around the world.

Carlos is one of the founders of the Mexican Festival and Australian Latin American Young Professionals (ALAYP).

Connect with Carlos on LinkedIn.

Rodrigo Eugenin


Strategic Planning Specialist – South America
(Agent through Optimal Consulting Ltda, Chile)

Rodrigo Eugenin is a Strategic Planning Specialist working with COMET Strategy.

Rodrigo graduated in Mining Engineering from University of Santiago de Chile in 2000.

He has become specialised in economic evaluation, cost estimation and strategic long-term mine planning through using COMET Strategy’s Optimal Scheduler. Most of the COMET Users in South America know Rodrigo and many of them were also trained by Rodrigo who has built many of their original models.

Connect with Rodrigo on LinkedIn.

Nathaniel Chouinard

Strategic Planning Specialist – Northern America
(Agent through Mine Concepts Inc, Canada)

Nat Chouinard is an accomplished mining professional bringing more than 18 years of operating experience in international mining and mineral processing projects.

Nat began working in various mines around Canada as Mine Supervisor and Superintendent, then progressively to more senior roles with mining companies in Canada, Tunisia and Botswana. Nat joined COMET Strategy from Labrador Iron Mines where he was Senior Vice President Projects. He also held a range of positions at IAMGold Corporation in Corporate Development, Operating Strategy and as Manager of Mining for Africa operations.

Nat graduated in 1994 from College of Thetford-Mines in Mining Engineering Technology.

Connect with Nathaniel on LinkedIn.