Executive Leadership Team

Our Executive Leadership Team members lead and manage our operations.
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Peter Graham

Managing Director / Chief Executive Officer

Peter is a chemical engineer with degrees from the University of New South Wales in Sydney and has attended executive management programs in Switzerland and USA.

Prior to joining Ok Tedi Mining Limited in 2015 as Managing Director and CEO, Peter was Managing Director ExxonMobil PNG Limited for seven years working on delivering the country’s first Liquefied Natural Gas Project. He is currently also Chairman, Kumul Minerals Holdings Limited.

He worked for 27 years with Exxon Mobil Corporation in Australia and USA. He was General Manager at several Australian coal mining companies, and later Managing Director, Exxon Coal and Minerals Australia Limited.

In the USA for 11 years, Peter held positions including General Manager, Monterey Coal Company in Illinois and Technical Department Manager, Exxon Coal, Minerals and Power Company in Houston Tx providing technical and operational oversight and support to affiliates in Australia, USA, Canada, Colombia, Chile and Hong Kong.

Musje Werror

Deputy Chief Executive Officer / General Manager External Relations

Musje assumed the role of Deputy Chief Executive Officer on April 09th 2015. Before this appointment, he was General Manager Employee and External Relations.

He is from Madang and holds a Bachelor of Science Degree in Chemistry. In 2010 he attained a Master of Business Administration from Divine Word University (DWU) in Madang and a Master of Professional Accounting from DWU and the Australian Catholic University.

He joined OTML under the Graduate Development Scheme in 1988 and has worked in various roles with the company for the last 28 years.

Musje also holds the following positions: Chairman Ok Tedi Australia, Chairman Ok Tedi Development Foundation, Chairman of Ok Tedi Power Limited and Trustee on the Heduru Board.

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 Thompson 

General Manager Major Projects

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.

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.

Kedi Illimbit 

General Manager Operations Support

Kedi holds a Degree in Mechanical Engineering from the PNG University of Technology, a Diploma in Management (Front Line Supervision), a Graduate Diploma in Maintenance Management and is currently doing his Masters in Engineering (Asset Management).

Kedi Joined OTML through the Graduate Development Scheme in 1995 where he started with the Purchasing & Warehouse in his first year, and during his second year, he joined Mine Maintenance.

Kedi also worked with several BHP Billiton mines performing various roles as Manager Maintenance, Manager Processing and Maintenance Superintendent.

He was previously employed as Manager Mobile Assets with Cliffs Natural Resources at their Koolyanobbing Iron Ore operations in Western Australia.

Kedi was General Manager Processing at OTML before his appointment in March 2017 to General Manager Asset and more recently General Manager Operations Support.