About

We are a lean, global consultancy of world-class experts dedicated to helping you build safer, more productive, and resilient mines.
Our mission
"To create value for our clients through reliable, efficient and technically excellent solutions."
GMT Global Mining Services delivers world-class mining expertise backed by extensive operational experience. Our company brings together senior specialists from Australia and Chile to provide practical, dependable and high-value technical solutions for open pit and underground mining. We support our clients wherever they operate, combining advanced analysis with real on-site experience to improve safety, confidence and project value.
Our vision
"To be the lead mining consultancy worldwide and set the global benchmark in technical services."
GMT Global aims to be a leading international mining consultancy recognised for combining senior technical leadership with a high-capacity delivery. The company seeks to set a new standard in open pit and underground mine design by integrating advanced analysis, practical operational experience and consistent technical quality across all projects.
2013
Company was founded
10+
Team members
100+
Projects worked on
Our values
Our values guide how we work and express our commitment to our clients, our team and the quality of every project we deliver.
Safety and sustainability. Safety is at the core of all our decisions and design recommendations. We integrate strong risk management into every project and apply sustainable practices aligned with modern ESG standards.
Development and wellbeing. We foster an environment where our people can learn, grow and reach their full professional and personal potential.
Integrity and respect. We act with honesty, ethics and transparency, treating all people with respect and dignity.
Innovation with purpose. We apply innovative thinking where it strengthens outcomes. Innovation must be practical, reliable, and directly valuable to operations.

Collaboration. We work closely with our clients through open communication, sharing knowledge and developing capabilities as a key part of every engagement.
Technical and operational excellence. We strive for high technical and execution standards, meeting our commitments and delivering reliable, high-quality outcomes.
GMT strategic expansion
Extending our reach across the Americas and Asia
Established in Chile in 2013, GMT built a strong technical foundation in mine engineering, geomechanics, geology, and mine water resources, serving as a key regional hub for operations across South America. In November 2025, the company reached a major milestone by integrating with established Australian consultancies to form GMT Global Mining Services. This unification combines senior leadership based in Australia with a deep technical delivery center in Chile, enabling GMT to operate at international standards while maintaining the competitiveness, efficiency, and depth of expertise that define its model.
Our consultants
We provide direct access to a collective of internationally recognised experts, each bringing decades of practical operational and strategic experience.
Mining engineer and technical services specialist with deep expertise in block and panel caving design, strategic planning and technical innovation for large underground operations.

56+ years of experience.
Alfonso Ovalle
Underground Mining Specialist
MS, BminEng (Hons), Bsc
Geotechnical engineer with strong experience in open pit slope design, operational geotechnical management and geomechanical assessments.

30+ years of experience.
Sergio Cuello
Principal Geotechnical Engineer
BminEng (Hons), Bsc
Geotechnical engineer with extensive experience in caving operations, cave mining geomechanics, ground support, monitoring and cave-related geotechnical assessments.

20+ years of experience.
Juan Carlos Arce
Senior Geotechnical Engineer
BminEng (Hons), Bsc
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