About

About GTS-W1

Specialist advisory and project delivery for the resources sector — exploration, project development, operational execution and technical-commercial decision support across Australia and international markets.

Who we are

Strategic capability, delivered in the field

GTS-W1 provides specialist advisory and project delivery services to the resources sector, with a strong focus on exploration, project development, operational execution and technical-commercial decision support across Australia and international markets.

Our team combines strategic capability with practical field execution experience, integrating directly with client project teams to deliver pragmatic, outcome-focused solutions — whether remotely or on site, including in remote and technically challenging jurisdictions.

We prioritise safety, efficiency, data quality and value creation, ensuring programs are delivered to a high standard while maintaining schedule discipline, operational control and commercial accountability.

Our people

The team

GTS-W1 is a founder-led, principal-led practice. Every engagement is scoped and run by a senior practitioner with field, study or operating experience in the commodity and jurisdiction in question — and each of them carries the professional sign-off that listed companies, financiers and regulators accept.

6Principals & specialists
180+Combined years
4Continents
JORCCompetent Persons
NI 43-101Qualified Persons

Founder & Principal

John Nolan

Perth, Western Australia

John Nolan founded GTS-W1 and leads the practice. He is a mining advisor and project leader with deep experience across underground nickel and cross-border transactions. He has led Pre-Feasibility Study workstreams in Western Australia, prepared RFQs for stope optimisation, ventilation support and rehabilitation of complex declines — including approximately 15.7 km at the Lanfranchi nickel project — and advises on regulatory pathways, community engagement and transaction structuring.

John's recent focus spans Australia, Central Asia, Africa and Latin America, bringing technical depth, regulatory fluency and aligned economics to projects and partners. Previously, John contributed to Evolution Energy Minerals (EV1) and maintains close relationships across the mining services ecosystem. His approach blends first-principles engineering with pragmatic deal-making and stakeholder alignment.

  • Founder of GTS-W1 — specialist advisory and project delivery for the resources sector
  • Cross-border advisory across Australia, Central Asia, Africa and Latin America
  • Underground nickel optimisation — stope design, ventilation, rehabilitation
  • Regulatory strategy, ESIA gap closure and community agreements
  • Transaction structuring — JV, offtake and royalties with aligned incentives

Principal

Mark Gillie

Project development & field execution

Mark brings more than 35 years of experience across the global mining and resources sector, with a strong background in project development, operational leadership, drilling program oversight and execution management across Australia, Africa and international jurisdictions.

His experience includes senior operational, project management and in-country leadership roles across exploration, mine development, project evaluation, acquisitions and operational turnaround environments. Mark has worked extensively within remote and operationally complex jurisdictions, managing multidisciplinary teams, contractors, logistics, regulatory pathways and stakeholder engagement under challenging field conditions.

His experience also includes oversight of RC and diamond drilling campaigns, field logistics management, QA/QC and reporting workflows, contractor coordination and operational risk management within remote exploration and project development settings.

  • Project development and operational turnaround across Australia, Africa and international jurisdictions
  • In-country leadership of multidisciplinary teams, contractors and logistics in remote settings
  • RC and diamond drilling campaign oversight, QA/QC and reporting workflows
  • Regulatory pathways, stakeholder engagement and operational risk management

Principal & Subject Matter Expert

Kerry Griffin

Lithium · geology · resource estimation

Kerry Griffin is a highly experienced mining geologist and lithium subject matter expert with over 30 years of global experience across Australia, Africa, South America and Asia. He brings extensive experience in exploration program design, resource drilling, geological modelling and estimation, and mine development, supported by a strong track record in leading geological teams and delivering study and project outcomes.

Kerry has been involved in major project discoveries and developments, including contributing to the Oyu Tolgoi discovery, and has a proven ability to drive project value through disciplined technical execution and successful development pathways. He is a Competent Person under JORC and a Qualified Person for NI 43-101 reporting across multiple commodities.

  • Lithium and LCT pegmatite systems, plus base and precious metals across multiple commodities
  • Exploration program design, resource drilling, geological modelling and estimation
  • Contributor to the Oyu Tolgoi discovery
  • JORC Competent Person and NI 43-101 Qualified Person

Principal Geologist

Melanie Hickman

Discovery & resource definition

Melanie Hickman is a mining and exploration geologist with over 15 years of experience across Western Australia and internationally, with expertise spanning nickel, gold, tungsten-molybdenum and porphyry copper-gold systems in Chile.

Melanie was a key member of the team that discovered the Boomerang Kaolin Deposit and was directly responsible for the design and supervision of the drilling program that defined a maiden resource of 93.3 Mt of kaolin. Her work demonstrates a strong capability in progressing projects from early-stage exploration through to resource definition.

Earlier in her career, Melanie played a direct role in the discovery and delineation of significant nickel resources while working as a Mine Geologist at the Lanfranchi Nickel Mine (2008–2012). She is a strong advocate for geoscience-led exploration, applying rigorous geological understanding to guide targeting and decision-making. This philosophy underpins her approach to all projects, ensuring exploration programs are technically robust and focused on unlocking maximum project value.

  • Discovery and resource definition — 93.3 Mt maiden kaolin resource at Boomerang
  • Nickel resource discovery and delineation at Lanfranchi Nickel Mine, 2008–2012
  • Nickel, gold, tungsten-molybdenum and porphyry copper-gold systems
  • Geoscience-led targeting and early-stage to resource-definition progression

Principal Consultant

Matthew Wheeler

Gold & uranium · resource evaluation · public reporting

Matthew Wheeler brings more than 30 years of experience across exploration, resource development and mining geology, with a strong focus on gold and uranium projects in Australia and internationally. He is a JORC Competent Person and an NI 43-101 Qualified Person.

His expertise spans exploration strategy, resource evaluation, drilling program design and management, geological and GIS database development, and technical reporting for public markets and regulatory compliance.

Throughout his career Matthew has held senior technical and management positions with companies including Mega Uranium Ltd, Range River Gold Ltd, Red 5 Limited, Normandy Mining Limited and Kalgoorlie Consolidated Gold Mines. A graduate of Curtin University of Technology with a BSc (Hons) in Applied Geology, he has worked alongside multidisciplinary teams comprising geologists, mining engineers, metallurgists, environmental specialists, financiers and investment stakeholders. His combination of technical excellence, project leadership and industry knowledge makes him a highly respected geological consultant capable of guiding projects from grassroots exploration through to resource definition and development.

  • Gold and uranium, Australia and international
  • Exploration strategy, resource evaluation and drilling program design and management
  • Geological and GIS database development for public-market reporting
  • Mega Uranium, Range River Gold, Red 5, Normandy Mining, Kalgoorlie Consolidated Gold Mines

Exploration Manager

Grant Donne

Lithium · Yilgarn & Pilbara · target generation

Grant Donne is an experienced exploration geologist with a strong background in mineral exploration across Western Australia, including exposure to lithium, gold and base metal systems. He has held senior roles including Exploration Manager with Gondwana Resources, where he was responsible for exploration strategy, target generation and drill program planning across a portfolio that included lithium-prospective tenements in the Yilgarn Craton and East Pilbara.

Grant has experience working on projects within key lithium terrains such as the Mt Holland district, giving him familiarity with LCT pegmatite systems and the associated exploration approaches. His broader experience includes greenfield and brownfield exploration, geological interpretation and management of multi-commodity exploration programs.

He is a member of the Australian Institute of Geoscientists (AIG), reflecting his commitment to professional standards and industry best practice.

  • Lithium exploration across the Yilgarn Craton, East Pilbara and the Mt Holland district
  • LCT pegmatite systems and associated exploration approaches
  • Exploration strategy, target generation and drill program planning
  • Member, Australian Institute of Geoscientists (AIG)

Compliance & independence

What you can rely on

Confirm each point below before publishing — a wrong answer here is worse than no section at all.

  • JORC Competent Person status held within the team, with NI 43-101 Qualified Person capability for North American reporting — see individual profiles.
  • Independent. GTS-W1 does not hold equity in the assets it reviews unless that is disclosed in writing to the client before engagement. [CONFIRM]
  • Safety management systems aligned to recognised industry practice, applied to every field program regardless of jurisdiction.
  • Professional memberships: Australian Institute of Geoscientists (AIG) and [insert any others].
  • Insurances: professional indemnity and public liability — details available on request. [CONFIRM]

Why clients engage us

Four reasons

Founder & principal-led

The person who scopes the work stays accountable for it — and the founder is personally accountable for every engagement.

Field-capable

We work on site in remote and technically challenging jurisdictions, not only from an office.

Reporting standard from day one

Data, QA/QC and records are set up so a resource, a study or a transaction is not blocked later.

Commercially fluent

Technical findings are always tied to capital, schedule and risk.

Speak to a principal

Tell us what you are working on and we will tell you plainly whether we are the right firm for it.