gambier earth movers
KEY PERSONNEL
Janis Sutherland - Owner
Since the early days of the business Janis has been a steady presence, supporting Ian as they built the Company. Following Ian’s passing in 2013, she became sole owner and continues to take an active interest in the business her family has worked hard to grow.
Janis remains closely connected to what’s happening and plays an important role as a guiding figure within the business. Her long-standing commitment to the company and family values is a cornerstone of who we are today.
Glen Sutherland - Director
Glen is the Managing Director of GEM Group Holdings. Having joined the family business at the age of 15, Glen has accumulated years of hands-on experience both in the field and within the office. From working directly on projects to overseeing key operations, Glen has developed a deep understanding of all aspects of the business. Now at the helm of day-to-day operations, Glen is committed to continuing the company's legacy while driving growth and innovation in the earthmoving and civil construction industry.
Heather Cram - Director
Heather is a Director and the Company Secretary at GEM Group Holdings. With over 20 years of experience in the industry, Heather plays a key role in overseeing the company’s day-to-day business functions, improving efficiency, and fostering relationships with clients and partners. Committed to safety, quality, and sustainability, Heather works to uphold the company’s long-standing reputation for excellence in the industry.
Mark Wyatt - General Manager
With 30+ years in construction, Mark brings expertise and leadership to Gambier Earth Movers. He has managed state operations and led multiple companies, driving growth and efficiency. Holding a degree in Construction Management & Economics and a Graduate Certificate in Law, he blends technical and legal expertise. Mark ensures high-quality, cost-effective solutions while fostering strong client relationships and community engagement, reinforcing Gambier Earth Movers as a trusted industry partner.
Scott Page - Financial Controller | CPA | Strategic Financial Leader
With 15+ years of executive experience, CPA-qualified Scott Page is a highly accomplished Financial Controller known for strategic insight, financial integrity, and innovative security strategies. He excels in budgeting, forecasting, analysis, cost management, and risk mitigation, serving as a trusted advisor to executives and Boards. Respected for his problem-solving, leadership, and approachable style, Scott fosters a positive workplace culture.
Adam Maywald - Engineering Manager
B.Eng (Civ. & Env.), MIEAust, MBA
Adam, a senior manager and Civil & Environmental Engineer, brings 17 years of expertise in civil construction, engineering design, and project delivery. As Engineering Manager, he leads teams to ensure excellence in planning, quality, and client relations. He has managed projects from $100K to $19M, consistently exceeding expectations. A key leader at GEM, Adam drives strategy, risk management, and growth initiatives, fostering a culture of innovation and continuous improvement in a dynamic industry.
Michael Jolley - Operations Manager
With 28 years of dedicated experience at GEM Operations, Michael Jolley has cultivated extensive expertise across various key areas, including accounts, purchasing, logistics, and operations management. Beginning his career as a Company Purchasing Officer, Michael advanced to Logistics Manager, where he oversaw specialized heavy movement, freight delivery, and plant hire services.
Michael’s vast knowledge, combined with a commitment to excellence, drives his approach to identifying and capitalizing on new business opportunities. His leadership ensures GEM continues to deliver exceptional service and operational success.
Simon Murphy - Quarry Manager
Simon Murphy is the Quarry Manager at Moree Quarry based in Harrow Victoria where he oversees the Moree team and the running of our crushing plant that has been producing and supplying our Grade A Basalt rock across Victoria and South Australia. Simon has been in the quarrying industry for over 20 years and has a vast range of contacts within the industry. Simon’s knowledge, commitment and experience ensures Moree quarry maintains high quality products to meet specification and client needs
Colin Cram - Manager Gambier Stone Supplies Pty Ltd
With years in the Mount Gambier limestone industry, Colin brings invaluable technical and business expertise to Gambier Stone Supplies. Leading a skilled team, he fosters innovation and ensures top-tier products and service. His hands-on approach upholds the highest standards, keeping the company at the forefront of industry trends. Committed to quality and customer satisfaction, Colin plays a key role in solidifying Gambier Stone Supplies as a trusted name in limestone supply.
Rod McArthur - Technical Manager
With 40+ years in construction materials testing, Rod was instrumental in developing the GEM Testing Laboratory, enabling in-house testing for asphalt, concrete, and quarry products. He excels in analyzing results, optimizing materials, and integrating recycled content into specifications. A recognized industry leader, Rod received the AAPA Industry Leadership Award (2017) and chaired AfPA technical committees for 15 years. His commitment to quality and innovation ensures GEM’s materials meet and exceed industry standards.
Bob Matthias - Maintenance Manager
With 47 years of experience, Bob, GEM’s Maintenance Manager, excels in equipment maintenance across automotive, agriculture, transport, and earthmoving sectors. He has mastered hydraulics, electrics, and component rebuilds while introducing advanced workshop technologies to enhance safety and compliance. Leading a skilled team, he ensures seamless operations and high standards. Passionate about machinery and mentoring, Bob’s global experience and nearly 20 years at GEM make him a key force in the company’s continued success.
Tom Dolan- Logistics Manager
With 8+ years at GEM, Tom has built expertise in accounts, purchasing, and logistics. Managing the trucking fleet with confidence, he specializes in heavy movement, freight delivery, and plant hire. His hands-on experience, including serving as relief Logistics Manager, ensures smooth operations and strong decision-making. Tom also excels in customer relations, fostering client connections and meeting their needs. His dedication and versatility make him a key asset to GEM Operations
Matthew Brill - Surveyor
Since joining GEM in 2020, Matthew has been a key contributor to the company’s success, specializing in machine guidance technology. His expertise drives efficiency and delivers high-quality results. Matthew also trains and supports staff, fostering a culture of excellence and continuous improvement. Known for his proactive problem-solving, he integrates emerging trends to optimize workflows and enhance precision. His commitment to exceeding client expectations strengthens GEM’s reputation for innovation and exceptional service in civil construction
John Convey - Saftey and Compliance manager
John joined GEM in 2023, bringing 30+ years of expertise in Management Systems, including WHS, Quality, and Environmental Management. He has led risk management and system optimization efforts in construction and manufacturing. Known for driving continuous improvement, John enhances safety, quality, and environmental standards, ensuring compliance and operational excellence. His proactive approach leads to measurable improvements in safety, quality, and sustainability. A trusted leader, John fosters a culture of accountability and effectively addresses challenges to enhance efficiency.
Ready to improve your projects with GEM Group's expertise?
Contact us today at 08 8725 4093 and let our commitment to excellence bring your vision to life.