Leadership Team

Our Executive Management at the National Gas Company of Trinidad and Tobago Limited.

Mark Loquan

Mark LoquanOn 1 September 2016, Mr. Mark Loquan assumed office as President of The National Gas Company of Trinidad and Tobago Limited (NGC).

A Chemical Engineer by profession, Mr. Loquan acquired an MBA in 1990 from the Fuqua School of Business at Duke University, and received training in Executive Leadership and Management from Cornell University and IESE Business School (University of Navarra).

Mr. Loquan has over 30 years’ experience in the petrochemical industry. In 1982, he began his career in the energy sector as a Process Engineer at Trinidad Nitrogen Co. Ltd. He moved through various leadership positions before being appointed as the first local President of Hydro Agri Trinidad (now Yara Trinidad Ltd.) in 2002. In 2009, he was appointed President, Upstream Business Development for Angola/Sub-Saharan Africa at Yara International. Mr. Loquan moved to Australia three years later, where he served as CEO of Yara Pilbara.

One of 50 Distinguished UWI Alumni Awardees, Mr. Loquan is a former Director of the Arthur Lok Jack Graduate School of Business and the Copyright Organisation of Trinidad and Tobago (COTT), former Vice Chairman of the Point Lisas Energy Association (PLEA), and former Advisory Council Member for Arts, Letters, Culture and Public Affairs at the University of Trinidad and Tobago (UTT). A passionate pannist, he is also an Honorary Founding Director of the nonprofit organisation the Music Literacy Trust, and served as the Musical Director of the first resident steelband in Perth, Western Australia – Perth Pandemix.


  • B.Sc. Chemical Engineering – The University of the West Indies
  • MBA – Duke University, Fuqua School of Business, North Carolina

Ronald Adams
Vice President, Operations

Ronald AdamsRonald Adams is the Vice President, Operations. Prior to this, he served as the Operations Manager at NGC CNG Company Limited.

He has a vast breadth of knowledge in the energy business with more than twenty-five years of experience, having held senior positions in Operations Management, Process Engineering Management and Specialty Chemicals Applications Management. Before coming to NGC, Ronald managed critical portfolios in several large organisations in Trinidad and the United States— Athlon Solutions (previously Champion Technologies), PETROTRIN, Ashland Chemicals, NUCOR Iron Carbide and Nutrien (formerly PCS Nitrogen Trinidad Ltd).

His areas of expertise include:

  • Strategic and Business level Planning
  • Safety and Operational Risk Management
  • Operations Management
  • Investment Decision Analysis
  • Gas Sales Contract Management
  • Engineering Management
  • Business Development
  • Project Management
  • Project Portfolio Management
  • Chemical Applications Management

Ronald has built an impressive list of accomplishments during his time at the Company. These include heralding the implementation of Risk-based Process Safety Management (PSM) across the NGC Group of Companies thereby mitigating risks, and improving the NGC Group’s procurement process through the implementation of a Supply Chain Management (SCM) function.

Additionally, he has been charged with leading a cross-functional team to bring across-border natural gas supply from Venezuela’s Dragon Field to the Trinidad market.


  • B.Sc. Chemical Engineering – University of the West Indies
  • MBA (specialisation in Strategic Planning) – Heriot Watt University, Edinburgh School of Business

Professional Affiliations

  • The Energy Chamber of Trinidad and Tobago
  • The Society of Petroleum Engineers
  • The American Institute of Chemical Engineers

Narinejit Pariag
Vice President, Finance and Information Management

Narinejit PariagNarinejit Pariag assumed the position of Vice President, Finance, Information and Management at NGC in March 2016.

Prior to that he held the position of Vice President, Finance and Administration at National Energy Corporation of Trinidad and Tobago Limited, a 100% owned subsidiary of NGC. Mr Pariag has over 20 years’ experience in the field of Finance and Accounting, having previously worked for private sector corporations.

He is a Fellow of the Chartered Association of Certified Accountants (FCCA), a member of the Institute of Chartered Accountants of Trinidad and Tobago (ICATT), and holds an Executive Masters in Business Administration.

Olave Maria Thorne
Vice President, Corporate Compliance and Governance

Olave Maria ThorneMs. Thorne joined the Company in 1985 as an Assistant Legal Advisor. She went on to hold the position of Head, Legal Services and later, Manager Legal and Commercial Services for a number of years before being appointed to the position of Vice President, Legal and Corporate Management. She assumed her current portfolio in November 2016.

Before joining NGC, Ms. Thorne worked as an associate with a legal firm and also as Company Secretary and Legal Advisor to the Emile Elias Group of Companies.


  • LLB – The University of the West Indies
  • LEC – Hugh Wooding Law School – The University of the West Indies

Edmund Subryan
Vice President, Legal and Corporate Affairs

Edmund SubryanEdmund Subryan is the Vice President, Legal and Corporate Affairs. Throughout his time at NGC, he has served as Legal Counsel, Head-Legal Services, and Manager of Legal and Corporate Affairs. Additionally, he serves as the Company Secretary for the following:

  • The National Energy Skills Centre (NESC)— January 2011 to present
  • Trinidad and Tobago LNG Limited— June 2013 to Present
  • NGC Trinidad and Tobago LNG Limited— June 2013 to Present
  • NGC E&P Investments Limited— June 2013 to present
  • NGC CNG Company Limited— September 2013 to present
  • Trinidad and Tobago NGL Limited — September 2013 to present

Edmund was instrumental in the TTNGL IPO—launched on the Trinidad and Tobago Stock Exchange in October 2015—a milestone for NGC, as the process was fully completed in-house; a feat not often heard of, and certainly a first for the Company. Edmund also played a pivotal role in NGC’s landmark acquisition of Total’s (The France-based global energy operator) Exploration and Production (E&P) assets in Trinidad and Tobago in September 2013.

Edmund’s current portfolio revolves around protecting the Company from risk and liability—this involves oversight of NGC’s tenders and contracts, Right of Way (ROW) regularisations and land acquisition and providing support to other critical groups within the organisation.

Prior to his arrival at NGC, Edmund worked with M.G. Daly and Partners as a Partner in the Conveyancing and Commercial Department.


  • Legal Education Certificate of Merit – Hugh Wooding Law School
  • Bachelor of Laws (LL.B) – University of London

Verlier Quan-Vie
Vice President, Commercial

Verlier Quan-VieVerlier Quan-Vie is a Commercial and Business Development Professional with over 23 years’ experience in the business sector. She has a diverse background spanning areas of risk management, commercial and business development in the Upstream, Midstream and Downstream of the Oil and Gas Sectors.

Ms. Quan-Vie began her career in the energy sector at the T&T Methanol Company (TTMC) in a technical role and subsequently moved into the Marketing/Commercial field. She has working experience with several high-level organisations, most notably the BG Group, Methanol Holdings Trinidad Limited and Maritime General Insurance Company Limited.

Prior to joining NGC, Ms. Quan-Vie held the position of Commercial Manager at the BG Group. There, she provided commercial strategy and management expertise in all aspects of the natural gas value chain in Trinidad, UK, Nigeria and Tanzania. She worked as the Commercial Lead on Business Development & Exploration activities in Trinidad and Nigeria for various Upstream Licensing Bid Rounds, Joint Venture Farm-in deals and other commercial agreements. She has effectively managed Production Sharing Contracts and Joint Venture agreements to ensure value creation for all parties.


  • B.Sc. Industrial Engineering – The University of the West Indies, St. Augustine Campus
  • Postgraduate Diploma in Business Administration (Oil & Gas) – Robert Gordon University, Aberdeen
  • Associate in Risk Management with the Insurance Institute of America
  • Associate of the Chartered Insurance Institute (ACII), UK

Professional Affiliations

  • Member of the International Association for Contract & Commercial Management (IACCM)

Carol Sylvester-London
Manager, Human Resources Division

Carol LondonMrs. Sylvester-London joined NGC in 1995 and served as an Information Assistant and a Training Officer before being promoted to the post of Head, Human Resource Planning in 2001. As part of her portfolio, Ms. Sylvester-London was responsible for, inter alia, identifying and tracking manpower requirements, developing, recommending and evaluating recruitment strategies, policies and procedures and implementing procedures to ensure the achievement of the organization’s manpower objectives.

In 2015, Mrs. Sylvester-London was appointed Manager, Human Resources Division (Ag.) with responsibility for directing the performance of the HR Division to ensure high quality service delivery in all functional areas of HR management at the operational and strategic levels including Manpower Planning, Recruitment and Selection, Compensation Management, Wellness Management, Training and Development, Employee Relations and Performance Management.


  • MSc. Skills and Performance – University of Leicester
  • BA (Hons) Business Studies – University of Glamorgan; UK
  • Diploma in Business Administration (ABE) Levels, I, II and Advanced
  • Administrative Professional Secretary (APS) – UWI Extra Mural Dept.


  • Train the Trainer – Institute of Business (IOB)
  • John Maxwell Certified Trainer

Lisa Burkett
Manager, Corporate Communications

Lisa BurkettLisa Burkett was appointed Manager, Corporate Communications on October 5th 2016.

She has over 25 years’ experience in the Public Relations and Communications field, having started her career in the Advertising industry. Lisa first came to NGC as a Public Relations Assistant and was promoted to Public Relations Officer in 1996. In 2011 she was appointed Head, Internal Communications.

Over her career at NGC, Lisa was responsible for corporate, stakeholder and community events; media engagement; leadership networking; publicity and promotions to support CSR programmes and most recently, internal communications.

Lisa Burkett is a former President of the Public Relations Association of Trinidad and Tobago and has lectured for several years on Public Relations, Marketing and Advertising at UWI Roytec.

An avid reader and film enthusiast, Lisa has sought to give back to society by being involved in the Past Pupils’ Association of her Alma Mater, serving as an executive member for several years, and as its President for the period 2011-2015.


  • B.Sc. in Social Sciences – University of the West Indies
  • MA in Mass Communications – University of Leicester


  • Graduate certification in Public Relations from the UWI Institute of Business and Business Management
  • Corporate Volunteerism – Boston College
  • Event Planning – George Washington University

Winston Mohammed
Senior Manager, Projects, Projects Division, NGC

Winston MohammedWinston Mohammed, joined NGC in August 2018 as the new Senior Manager, Projects, Projects Division.

Mr. Mohammed is a graduate of The University of the West Indies, St Augustine. He has over 25 years’ experience in the oil and gas industry and has spent over 10 years leading large projects (>US $500 million) from design, procurement, construction, commissioning and handover to operations, including the Juniper, Mango and New Oil Export Pipeline projects in a Programme approach. His work experience, prior to NGC, includes project management and gas commercial experience at BP Trinidad and Tobago LLC.

He is accountable for the delivery of all capital projects in NGC and for the compliance of all capital projects against the requirements of NGC’s Project Management Methodology (PMM) across the NGC Group.


  • B.Sc. Mechanical Engineering – University of the West Indies, St. Augustine

Stephen Mc Clashie
Senior Manager, Supply Chain Management

Stephen Mc ClashieMr Stephen Mc Clashie was appointed Senior Manager, Supply Chain Management in March 2019. He is responsible for the alignment of procurement and contracting activities throughout NGC and by extension, the NGC Group, in order to derive maximum value throughout the value chain, with attention to technology-driven solutions.

Mr. Mc Clashie has over 40 years proven expertise in supply chain management, project execution, business development, strategic planning and finance. He began his career in supply chain management at the Trinidad and Tobago Oil Company Limited and held several positions.

Mr. Mc Clashie worked at NGC as Materials Superintendent for five years before moving on to the Power Generation Company of Trinidad and Tobago Limited, Plato Training and Consultancy Services Limited and Atlantic LNG. He has served on the board of several companies including Technical Services & Engineering Supplies; Plato Training and Consultancy Services Limited; South West Regional Health Authority and Trinidad Lake Asphalt.

Mr. Mc Clashie holds a Bachelor of Science Business Administration (Cum Laude) in Management and Integrated Information Systems from Long Island University, a Master of Business Administration (Distinction) with an emphasis in Finance, also from Long Island University and is certified as a Master Practitioner of the Neuro Linguistic Programming (NLP), Certified Purchasing Manager (CPM Life Member) from the Institute of Supply Management (ISM) and Advance Certified Mediator Alternative Resolution Dispute from the Alternative Resolution Dispute Center.

Himalaya Boodoosingh
Senior Manager, HSE and Security, NGC

Himalaya BoodoosinghMr. Himalaya Boodoosingh was appointed Senior Manager, HSE and Security in June 2019. He brings over 21 years’ experience in various positions across Atlantic LNG from its inception, including HSSE expertise. His areas of expertise include Process Safety Management, HSSE Management, Project Management and Integrated Management Systems. Mr. Boodoosingh is the former Director Integrated Management Systems, Atlantic.

A process engineer, he began his tenure with Atlantic in 1997, when he was appointed Process Safety Management Coordinator. He was then promoted to HSSE Manager where he was accountable for development, implementation and maintenance of an HSE Management System through the growth phase of Atlantic’s operation. He served as Executive Assistant to the President and was then appointed Optimisation Manager before moving to Operations Planning Manager.

Seconded to bpTT, he worked on projects that sought to deepen commercial acumen. He held several other positions including Engineering Manager and then Business Opportunity Manager, Onshore Compression Project.

He was called upon to deliver strategy for the systematic and in control operations, planning and performance management.

As a master root cause specialist with in-depth experience in risk management and environmental management, he brings to NGC a wealth and diversity of experience as the organisation seeks to optimise value across the energy value chain.


  • B.Sc. Chemical Engineering – University of the West Indies