Our Group
Four specialist brands. One unified group standard.
Each dedicated to their field.
Together, unmistakable in Australia.
Engineering a better
future together
A national network of specialist engineering and professional services companies, united by a shared commitment to technical excellence, delivering deep geotechnical, drilling, testing and engineering expertise across Australia.
What began in 2015 as Protest Geotechnical has grown into a national group of businesses under four brands: Protest CMT, PTG Consulting, Mapstone Geotechnical Services and Precision Geotechnical Services.
Through carefully chosen acquisitions, we've broadened our capabilities while preserving each company's strengths. Together, we support projects across transport, infrastructure, mining, renewables and defence.
Individually, each delivers real strength. Together, they create one integrated capability, an advantage you won't find anywhere else.
Our Group
PTG Group brings together four specialist businesses: Protest CMT, PTG Consulting, Mapstone Geotechnical
Services and Precision Geotechnical Services. Together they deliver engineering advisory, materials
testing, geotechnical investigation and specialist drilling on complex projects nationwide.
