Meet Our Team



  • Shannon McMahon MAusIMM


    Shannon McMahon

    Shannon grew up in the mining industry, working at one of the first tenement management agencies in WA.  In 2003, Shannon established MMTS, which has since grown to be a leading land management agency in Australia.

    With almost two decades of experience in mining land management, Shannon has considerable knowledge of the industry, and of mining legislation and policy.  He provides advice on high-level land management strategy and all aspects of mining title compliance. Shannon has also served as an expert witness in matters before the Mining Warden in Western Australia.

    Shannon is an avid champion of the mining industry.  He is a councilor of AMEC (Association of Mining and Exploration Companies) and is the chair of AMEC’s Mining Legislation Committee.  Shannon is persistent in protecting and promoting the interests of junior and mid-tier companies.

    Shannon is a board member of the D’Arcy Slater Foundation, which aims to provide Australian youth with a means to realise their aspirations and potential in education, sport, music and the arts and to provide domestic training in all fields.  Shannon is also a member of Redkite’s Western Australia Regional Council.  MMTS is a proud supporter of Redkite, a charity providing essential support to children and young people with cancer.

  • Iva Morrell BA LLB (Distinction)


    Iva Morrell

    Iva holds a Bachelor of Arts and a Bachelor of Laws from the University of Western Australia.  Iva has worked in the mining industry for over 10 years, having worked as a mining lawyer before joining MMTS as a consultant in 2010.

    Iva has experience dealing with a vast range of statutory compliance and land access issues relating to exploration and mining tenure.  She has advised companies in relation to approvals processes affecting mining land applications and compliance with conditions following grant.  Iva has managed the acquisition of projects (by application or transaction) and the preparation of projects for disposal to third parties.  Iva has also previously served as a member of AMEC’s Aboriginal Affairs Committee.

  • Helen Arcus

    Team Leader - Compliance

    Helen Arcus

    Helen worked as a paralegal in corporate law before joining MMTS as a consultant in 2013. Helen provides advice in relation to compliance with mining land legislation across all Australian jurisdictions.  Helen also oversees the workflow of the consulting team and trains junior team members.  Helen is also working towards a Bachelor of Commerce (Accounting).


  • Celeste Patricio

    Senior Tenement Consultant

    Celeste Patricio

    Celeste has worked in the mining industry for almost 15 years, starting out in corporate services and moving to consulting at MMTS in 2007.  She has built up considerable expertise in compliance matters.   Celeste also oversees the integrity of MMTS’ large databases and is the resident expert in ground monitoring and tenement applications.

  • Stephanie Lee BA LLB

    Internal Consultant

    Stephanie Lee

    Stephanie was employed in the government sector before joining MMTS as a consultant in 2013.  Stephanie consults internally to the management team at MMTS.  She prepares submissions to various government bodies, undertakes historical land research and due diligence and project reviews for project acquisition and divestment.

  • Kara Williams LLB

    Tenement Consultant

    Kara Williams

    Kara holds a Law Degree from the University of Leicester and a Legal Practice Certificate from Nottingham Law School. Kara worked as a Litigation Executive in Personal Injury Law in England before moving to Australia in 2019 and joining MMTS as a consultant. Kara provides advice in relation to compliance with WA mining legislation and also the administrative management and briefing of objection matters.

  • Ryan Jones

    Tenement Consultant

    Ryan Jones

    Ryan joined the team at MMTS after working in the events industry for 3 years. Prior to that, Ryan studied overseas where he obtained a Bachelors Degree in Business Administration with an emphasis in Management. Ryan is a Tenement Consultant responsible for assisting our clients with compliance matters and the ongoing management of our clients’ assets.

  • Natalie Mauger

    Senior Assistant Tenement Consultant

    Natalie Mauger

    A former licensed conveyancer, Natalie joined MMTS to assist the consulting team with administrative tasks. A major component of Natalie’s role is the management of payment of rates to local government authorities on behalf of MMTS’ clients.

Administration and Accounting

  • Vicki Stathopoulos

    Corporate Office Administration/PA to the directors

    Vicki Stathopoulos

    Vicki joined the team in 2020 as our Corporate Office Administrator. Vicki comes to us with over 10 years’ experience in various industries such as customer service, hospitality and event management. Vicki works closely with our shared services managers and wider administration team and runs our front-of-house function to ensure client satisfaction and service delivery.

  • Janette Hartigan BSc


    Janette Hartigan

    Janette holds a Bachelor of Accounting and Mathematics from Leicester University, U.K. She has 30 years’ experience in the field of accounting, across a diverse range of commercial, financial and operational activities. She has managed the MMTS accounts since joining in 2009.

  • Holly Hartigan

    Accounts Assistant

    Holly Hartigan

    Holly joined MMTS in 2018 as an assistant to the accounts team. Holly maintains and manages all aspects of the day-to-day transactional processing and recording, reconciliations and assisting with the monthly invoicing. Holly is also studying towards a degree at University.