
Hello, I’m Gazza
About
Senior Mining Engineer & Scheduling Specialist with 30+ years of underground and open-pit experience across Australia and Africa. Led end-to-end planning and scheduling for Tier 1 operators including BHP, Glencore, and South32. Expert in Deswik, Datamine, and Vulcan; redesigned systems, automated reporting, and optimised processes to improve safety, efficiency, and value. Key strengths include deep operational experience translated into practical mine planning systems. Expert-level Excel and data skills (currently developing Power BI capability), combined with creative problem-solving and technical expertise, driving continuous business improvement. Senior leadership roles as Technical Services Superintendent and Production Superintendent, managing teams up to 130. FAusIMM Fellow and Master of Engineering Management with multi-commodity expertise in gold, copper, base metals, manganese, bauxite, and diamonds. Combines technical rigour with operational leadership to deliver safe, profitable results.
“Core Mining Engineering Capabilities”
- Expert scheduling, sequencing (activities & scenarios), and optimisation across complex multi-commodity environments
- Full redevelopment of scheduling models, resource reporting, and integrated planning workflows (Deswik, Datamine, Vulcan)
- Advanced Excel automation of month-end reconciliations, daily operations and management reports, and dashboards delivering real-time intelligence (with growing Power BI skills)
- Constraint analysis and value-stream optimisation driving sustained performance improvements
On-the-Ground Experience:
- Technical Services Superintendent — full accountability for short- and medium-term mine designs, schedules, budgets, survey, and compliance
- Senior Scheduling Engineer — leading planning teams and delivering rolling operational schedules with direct reports
- Senior Mining Engineer / Technical Lead — managing survey teams, planners, and consultants while supporting operational delivery
- Production Superintendent, Shift Boss & Supervisor — leading large underground and open-pit teams (up to 130 personnel) with proven safety and production leadership
📩 Contact: gazzasteyn@gmail.com
Experience
[Select to expand]
Apr 2026 – Present
Senior Specialist | Business Improvement | Operational Excellence
Perilya, Broken Hill, NSW, Australia

Managing daily and month-end leadership reporting, while also driving and sustaining continuous improvement initiatives.
► Conceptualised, developed and launched a fit-for-purpose custom Value Stream Management process (primary and enabling value streams) for a Tier 2 mine.
► Leveraged the full Microsoft Office 365 suite, including Microsoft Forms, to develop digital idea submission forms and standardised pre-start meeting templates (to enable supervisors to utilise a high-impact agenda focused on Safety, Alignment & Innovation).
► Continuously advancing Power BI skills and expertise (intermediate level) to design and deliver automated dashboards and integrated reporting solutions, including through a Content Management System (CMS).
Feb 2019 – April 2026
Senior Scheduling Engineer
Perilya, Broken Hill, NSW, Australia

Managed the delivery of short, medium and long-term schedules by processing mine designs using Deswik CAD, IS, SO, and Sched, and Maptek Vulcan Envisage. Also responsible for End-of-Month (EOM) processing and reporting.
► Projects – Redeveloped Stope Optimisation & Resource Reporting Process in Deswik.
► Developed broader spectrum feature attributes in Maptek Vulcan, Datamine, and Deswik to optimise identifying a wider variety of design activity intentions from design engineers, providing more choices to specify stope, development, stripping, rehabilitation, and fill types.
► Redeveloped Month End Reports, GM Reports, Scheduling Reports, Daily Reports, and Operational Dashboards in Excel to automate workflows and optimise quality timely deliveries.
► From first principles developed an integrated TKM process in incompatible scheduling software, with capabilities to automatically track and report tonnages across all planning ranges.
► Transitioning to Datamine in 2019, I cleaned up and transitioned the mine scheduling data, and rebuilt and enhanced the mining model.
Aug 2017 – Feb 2019 | 1 yr 7 mos
Senior Scheduling Engineer, Short Term Scheduling
Perilya, Broken Hill, NSW, Australia

Managed the delivery of short-and-medium-term operational schedules and rolling operational plans, incl. the optimisation of mining and exploration activities. One direct report.
► Also managed delivery of daily reports and chairing/scribing at daily operations meetings.
► I also delivered weekly and monthly three-month-forecasts to operational teams.
► Projects – Optimised the short-term scheduling process to improve stakeholder engagement. Also redeveloped Excel spreadsheets for scheduling and production, drill and blast, development, and backfilling dashboards and integrated these into the Datamine software and a Microsoft Access database (ProdFX) to automate workflows and optimise quality timely deliveries.
Jun 2015 – Jun 2016 | 1 yr 1 mo
Vacuum Drilling Supervisor
South32 Worsley Alumina, Boddington, WA, Australia

As an engineer with previous operational supervisory experience, I accepted an assignment as a Vacuum Drilling Supervisor to commission grade control drilling operations for two drill rigs with four direct reports. During this time, I also served as a Certified Trainer and Assessor while developing training tools and facilitating training and assessing operator competence.
► Responsible for Geological Vacuum Drilling operations across the Worsley operations.
► Commissioned operations, established training programs, and assessed competencies.
► More than doubled first season drilling targets, surpassing goals with an excellent safety record.
May 2014 – Jun 2015 | 1 yr 2 mos
Senior Scheduling Engineer
South32 Worsley Alumina, Boddington, WA, Australia

In charge of medium-term (2-year budget) and short-term (3-month forecasts) schedules, including a stacking and reclaiming plan. Employed RPM Global’s OPMS, HAULSIM, & XACT.
► Projects – Developed an automated stacking and reclaiming planning process in Microsoft Excel linked to PLC switch locations in a Sequel Server Database.
► Established RPM Global’s OPMS (Open Pit Metals Solution) and HAULSIM.
Mar 2013 – Feb 2014 | 1 yr
Technical Services Superintendent
St Barbara Limited, Gold Ridge Mine, Solomon Islands

Managed the fulltime delivery of short-and-medium-term mine designs and schedules, drill and blast plans, budgets, waste management plan, traffic management plan, and survey activities.
► Also served five months rotating as Acting Mine Manager and Production Superintendent.
► Projects – Developed and implemented a short-term planning and compliance control process, a blasting consumables database, and a waste dump and site traffic management plan.
Mar 2011 – Mar 2013 | 2 yrs 1 mo
Senior Mine Planning Engineer
Glencore, Mount Isa Mines, QLD, Australia

Managed the quality delivery of short-term stope and development designs from four engineers at a Sublevel Stoping operation, incl. administering a medium-and-long-term design database.
► Project – Realised value and project managed an underground workshop conversion into a fresh air base during firing times that returned an NPV of AU$140M.
Feb 2009 – Mar 2011 | 2 yrs 2 mos
Senior Mining Engineer / Technical Lead
BHP Billiton, GEMCO, NT, Australia

I led a Survey team and managed the delivery of short-and-medium-term mine designs, schedules, forecasts, drill and blast plans, compliance, risk and quality controls, monthly reconciliations, administration of contractors and consultants, and deliverables for ground control, tailings, and water management plans, incl. project management activities while also relieving direct reports. Four direct reports in a short, and medium-term planner, and two surveyors, excl. the consultants.
► Project – Developed and implemented plan compliance controls and completed a Six Sigma and Lean Green Belt project to increase directly fed ore and reduce rehandling costs. Also sourced a best-fit pit-to-port short-term planning solution (XACT) for the site.
May 2007 – Feb 2009 | 1 yr 10 mos
Mine Planning Superintendent
BHP Billiton, Hotazel Manganese Mines, NC, South Africa

Managed the establishment and upkeep of mine planning processes and systems for an underground Board-and-Pillar and Open Pit with four direct reports. I also managed resource optimisation, strategic planning, mine design, modelling, and scheduling. Reported to MRM Mngr.
► Project – Justified and commissioned in-house Mine Planning Departments for two mines, incl. selecting and implementing the scheduling software, developing new mining models, and recruiting and training personnel. This project realised a saving of ZAR_8M/year.
Jun 2000 – May 2007 | 7 yrs
Mining Engineer & Production Supervisor
The De Beers Group of Companies, Finsch Mine, NC, South Africa

Served as a Production Supervisor for 3 years and 6 months, Short-Term Planner for 1 year and 6 months, Automation Control Room Supervisor for 1 year and 6 months, and Acting Construction, Production, Shaft and Ground Handling (Crushing and Conveying) Superintendent for 5 months.
Dec 1989 – Jun 2000 | 10 yrs 7 mos
Production Supervisor & Mining Engineer
Anglo-American / AngloGold Ashanti, Matjhabeng Mine, FS, South Africa

Served as a Production Supervisor for 6.5 years, while also completing studies in Mining Engineering. My duties included functioning as a Certificated Stoping, Development and Logistics Miner with a Shotfirer and Shaftsman Certificate.
► Managed teams up to 130 people as a Production Supervisor for 4 years.
► Project – Identified and executed a solution that returned a production section to full production, by increasing ledging operations to expedite unlocking face lengths for stoping.
Education

2020 Southern Cross University
Master of Engineering Management, MEM, GPA 5.0
Activities and Societies: SCU Alumni
MBA for Engineers

1995–1999 University of Johannesburg
National Higher Diploma, Metalliferous Mining Engineering
Assessed as Australian Bachelor’s Degree (BEng) Equivalent
[View assessment]

1995–1998 University of Johannesburg
National Diploma, Metalliferous Mining Engineering
Assessed as Australian Advanced Diploma Equivalent
[View assessment]
Certifications

Implement & Maintain Management Systems to Control Risk; Carry Out the Risk Management Process; Implement & Monitor WHS Policies, Procedures & Programs RIIRIS501E, RIIRIS402E, BSBWHS411
Optimised Mining Pty Ltd
Issued May 2025
[See credential]

Establish & Maintain Mine Emergency Preparedness & Response RIIERR601D
Mine Resilience (Australia) Pty Ltd
Issued Nov 2017
[See credential]

Minerals Industry Risk Management Intensive MINE7033
The University of Queensland
Issued Jan 2012
[See credential]

Certificate 4 in Workplace Training & Assessment TAE40110
DBW Krause Investments Pty Ltd (Krause Health & Safety)
Issued Dec 2011
[See credential]

Certificate 3 in Surface Extraction Operations (S123/G189) RII30109
DBW Krause Investments Pty Ltd (Krause Health & Safety)
Issued Oct 2011
[See credential]

Certificate 2 in Surface Extraction Operations RII20209
DBW Krause Investments Pty Ltd (Krause Health & Safety)
Issued Mar 2011
[See credential]

Use of Advanced Features, MS Excel Power User ICAU3126B
Darwin Human Resource & Computer Academy: RTO 6893
Issued Jan 2011
[See credential]

Mine Overseers Certificate of Competency for Metalliferous Mining
Department of Minerals Resources, South Africa
Issued Jan 1999

Blasting Certificate for Scheduled Mines
Department of Minerals Resources, South Africa
Issued Nov 1992

Shaftsman Certificate
Department of Minerals Resources, South Africa
Issued Apr 1992
Software skills
[Black = Current | Grey = Pre-2017]
Accomplishments
Strengths
Praises
“Praise, like gold and diamonds, owes its value only to its scarcity”
– Samuel Jackson