Mark Thompson

Acting Chief Executive Officer

Mark has a Bachelor of Civil Engineering, Master of Engineering Science (Geomechanics) and a Graduate Certificate in Minerals Industry Risk Management.

Mark has over 30 years’ experience in the mining and construction industry in Australia, PNG, Canada, USA, Indonesia and Tanzania.

He started work in PNG with the Porgera Gold Mine from 1992 to 1996. He also worked with the Lihir Gold Mine from 2006 to 2011.

Cameron Clark

General Manager Commercial, Chief Financial Officer & Company Secretary

Cameron brings to Ok Tedi more than 30 years business experience including 15 years in senior management roles within the mining industry, and mostly in PNG. Prior to that, he held senior management roles in the technology and liquor industries. He holds a Bachelor of Commerce from the University of New South Wales, Sydney, Australia and is a member of both CPA Australia and CPA PNG.

Cameron is a Member of the OTML Board Audit & Risk Committee and a Director of Kumul Minerals Holdings Limited.

Derrick Kelly 

General Manager Mining

Derrick holds a Bachelor of Science Degree in Engineering Geology & Geotechnics and is a Registered Professional Geoscientist.

Derrick has over 20 years’ experience in geotechnical & mining engineering and project management and has worked as an engineering consultant on several projects around Papua New Guinea including Lihir and Hidden Valley.

Since joining OTML in 2009, he has held numerous positions within the company including General Manager Business Strategy, Processing and Operations Support.

Greg Moore

General Manager Processing

Greg commenced with OTML in May 2015 to lead the SAG 2 replacement project. He was appointed to General Manager Processing in June 2017.

Greg holds a Bachelor of Applied Science (Metallurgy) Degree and a Graduate Diploma in Applied Finance Management and Investment.

He’s worked in mines in New Zealand, New South Wales, Northern Territory, Tasmania and Western Australia. Greg has also worked at other mines in PNG – New Guinea Gold Fields (Wau), Porgera and Lihir.

Mark Stone

General Manager People and Capability

Mark holds a Bachelor of Commerce majoring in Human Resources from the University of Newcastle, Australia. He is also a professional member of the Australian Human Resources Institute.

Mark has over 30 years of international experience in senior human resources roles in the mining industry, from the perspective of site based and corporate positions. His responsibilities have included all aspects of human resources in Australia, Africa and North and South America.

He is very passionate about unlocking potential of employees through engagement and team work.

Harold Duigu

General Manager Corporate Affairs

Harold has over 25 years of experience in Human Resources.

He joined OTML in 1996 where he held a number of supervisory and management roles including 7 years as Manager Human Resources before he moved to Port Moresby in 2019 where he was Manager Government and External Relations before his appointment to General Manager Corporate Affairs in December 2021.

He holds a Bachelor of Arts from the University of Papua New Guinea.

Jesse Pile

Acting General Manager Community and Operations Support

Jesse is from Gumine, Simbu Province. He holds a Bachelor of Science degree in Geology out of University of Papua New Guinea (UPNG), a Master of Science degree in Environmental Geochemistry (UPNG) and a Diploma in Management from Barrier Reef Institute of TAFE.

Jesse started his career with BHP Exploration, where he worked for 5 years before moving to Minorco Exploration, a subsidiary of Anglo America Corporation for 2 years and Misima Mines Limited for 1 year followed by a 2-year period of study from 2001 to 2002.

He joined OTML in January 2003 as Team Coordinator (Superintendent) Riverine Management and was in that role for 13 years until his appointment to the Manager Environment in March 2016.

Jesse is married with five sons and a daughter, and resides with his family in Port Moresby.

Brendan Gowdie

Acting General Manager Major Projects and Engineering

Brendan holds a Diploma in Project Management and certificates in Electro Technology, and Quality – Internal Auditor respectively.

He previously worked with Rio Tinto’s Kestrel Mine Extension as a Project Manager, as a Senior Construction Manager with Rio Tinto’s Alcan Gove project, and also with Porgera Paste Plant as General Manager Construction.

He brings to OTML over 35 years of experience working in project management roles in multi-facility projects in both green and brownfield sites in the mining and processing industries.

Brendan resides in Tabubil with his wife Debbie.