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Geotech's Legacy of Innovation and Adaptability

Geotech Drilling boasts a rich history in geotechnical drilling in New Zealand. Founded by Gary and Cathrine Barnett, the company's journey began in 1990 with the acquisition of its inaugural rig, originally from the Electricity Corporation of New Zealand (ECNZ) which Gary helped to design and build in 1981. Initially intended for the construction of transmission pylons, this first rig was also tailored for complete geotechnical site investigations.

Equipped with one of New Zealand's pioneering Cone Penetration Testing (CPT) systems, along with hollow stem augers tailored for remote operations where water accessibility was limited, this rig exemplified Geotech's commitment to innovation and adaptability in challenging environments.

Since the company's inception, this inaugural rig has journeyed alongside numerous trucks, symbolising commitment to mobility, efficiency and sustainability. Moreover, the continuous investment in upgrading equipment, ensures that Geotech remain at the forefront of the drilling market.

Forward Momentum

In June 2007, Geotech underwent a transition in ownership, with Mark and Mel Barnett taking the helm. Their aspiration was to continue the legacy of the successful family business, with Mark following in his father's footsteps.

Under this vibrant and youthful leadership, the company's trajectory was set to evolve.


Geotech Drilling has constantly been at the leading edge of the Geotechnical industry, having the latest, most advanced drilling methods, rigs and continuously updating the logging and interpretation software, in order to deliver even more precise and efficient geotechnical solutions to suit client needs.

A Journey of Knowledge and Commitment

Mark's journey in drilling began at a young age, learning the ropes from his father. His extensive experience and passion for the industry drive his commitment to sharing valuable knowledge and expertise with both current and prospective clients, fostering enduring relationships built on trust and excellence.

Alongside his wife, Mel, Mark guides Geotech Drilling, instilling a family-centric ethos into the company's core. With three teenage children, their dedication transcends mere business success, fostering a culture of unity and shared values within the Geotech family.

Sonic Rig
Geotech Drilling out in the field New Zealand
Barnett Family


Meet the dedicated individuals who drive the success of Geotech Drilling.

Mark Barnett Geotech Drilling, Director



With years of hands-on experience in the drilling industry, Mark guides the Geotech Drilling team with a clear vision aimed at delivering unmatched drilling services. His profound expertise and exceptional leadership have played pivotal roles in driving the success of countless projects.

Mell Barnett Geotech Drilling, Director



With extensive experience and a keen eye for detail, Mel spearheads the Geotech Drilling team as Director, Owner, and Office Manager. Her strategic guidance and meticulous approach ensure seamless operations and client satisfaction. Mel's multifaceted expertise is integral to the company's continued success and growth.

Troy Toms Geotech Drilling, Operations Manager



As the Operations Manager, Troy brings a wealth of expertise and a proactive approach to leading the Geotech Drilling team. With a keen focus on efficiency and excellence, Troy oversees all operational facets, ensuring seamless execution of projects. His dedication and commitment drive the company towards continued success in the drilling industry.

Sarah Wilson Geotech Drilling, Accounts & Admin



Emma plays a pivotal role in the Geotech Drilling team as the Accounts and Administration specialist. With attention to detail and a knack for organisation, Emma ensures smooth financial operations and administrative efficiency. Her dedication and expertise contribute significantly to maintaining the company's financial health and operational excellence.

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