Senior Management

Mr Simon Slesarewich CEO

BEng(Mining), Grad Dip(Business Administration), Grad Dip(Applied Finance and Investment)

Simon Slesarewich is a highly experienced mining executive with a proven track record in large-scale mining project delivery and operations. Prior to joining  Centrex, Mr. Slesarewich was CEO and Managing Director of ASX-listed Metallica Minerals. His 20-plus years of experience also includes leadership roles with other minerals and energy sector firms such as Larkham Resources (GNRI portfolio company), Middlemount Coal where he was responsible for the successful development (Capex of A$500m) of a large integrated coking coal mine and Boardwalk Resources which was successfully divested for A$300m to Whitehaven Coal as part of a large A$5.2bn transaction.
Simon is known for his strong commercial acumen and extensive experience  across all areas of mining operations, enabling him to grow the scale and scope of businesses comprehensively in order to maximise shareholder value. Simon was previously a director of the Queensland Resources Council and also served on the management committee of the Queensland Exploration Council.

Mr Mark Terry Chief Financial Officer 


Mr Terry is a CPA with more than twenty years’ experience in the management of financial, commercial and legal  matters in the mineral exploration and mining industry. He commenced his career with KPMG before holding a range of senior finance positions with Normandy Mining, Newmont Australia and Xstrata Zinc where he was Finance and Commercial Manager for Australian Operations. Mark later held the role of CFO of Terramin Australia Limited (an operating junior miner) before providing consulting services in senior finance and project roles with Havilah Resources and Rex Minerals. Most recently he was the CFO of emerging energy development company Leigh Creek Energy Limited before joining Centrex in 2018.


Mr Alastair Watts  General Manager, Exploration 

BSc(Geo), DipBs (Front Line Management),  MAusIMM

Mr Watts is a Geologist with over 25 years experience in exploration, mining and project development. He has extensive gold, iron ore and phosphate mining experience as well as a successful history of mineral discovery and development. The technical expertise gained at the Phosphate Hill mine provided significant exposure to the fertiliser market to complement Centrex’s development of the Ardmore Phosphate Rock Project. A broad technical knowledge of exploration has been gained from base metal and gold projects in the Lachlan Fold Belt of New South Wales, the eastern goldfields of Western Australia, the Drummond Basin in north Queensland and nickel laterite deposits in Indonesia. He has held previous positions in both major resources houses, and mid-tier and junior operators. His roles have spanned mining, quality control and project management.


Mr Steve Klose | General Manager, Projects

BEng (Minerals Engineering), MSc (Project Management)

Mr Klose is a project manager with over 25 years of experience in project management and process engineering within the mining industry. He has extensive experience in iron ore, copper, gold and nickel within Australia, Indonesia, South Africa, Chile and Peru. His experience includes roles both in engineering and operations that have encompassed the entire project lifecycle from study to execution including detailed design, construction, commissioning and operations.

Mr Gérard Bosch | Manager Approvals & Stakeholder Relations

Bsc(Geol)(Hons), FAusIMM

Mr Bosch is a geologist with over 37 years working in Australian mineral exploration, discovery and development. He has held previous positions in BP Minerals, North Flinders Mines, Normandy Mining, Australian Zircon and Eyre Iron. Mr Bosch has particular experience in the pre-development phase of mining operations, including statutory approvals and land access, and has broad experience in the management of exploration.