Gold Exploration, Groundwater, Geotechnical investigation, Image the ground and subsurface

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Site Investigations

Geo-technical and Site Investigations, On shore and Near shore

Project management and Technical services

  1. Site approvals

  2. Site land surveys

  3. Site investigation services, geotechnical drilling,  geotechnical testing

  4. Geophysical surveys for site investigation and site characterization

  5. Groundwater location and management

  6. Project management – investigation planning – – budget control

  7. Reporting and analysis

Reach-out to us with your site requirements

Site development and project management involve a series of intricate processes that ensure the orderly development of land, mitigate environmental impacts, and promote public safety. These processes include site approvals, land surveys, geotechnical investigations, and geophysical surveys, all of which are crucial in understanding the environment and conditions of the proposed development area.Site approvals are essential to ensure that development projects align with their surroundings, including neighboring properties, traffic circulation, and infrastructure such as sewers. This process involves analyzing the environmental and socioeconomic impacts of the proposed development and requires local political approval. The planning process reflects the desires and interests of the community and is governed by local and state laws.

Storage Tank Investigation


Subsurface imaging

Geophysical surveys are used to identify geological features and buried objects, which can be crucial for site investigation and characterization. These surveys employ various methods such as seismic refraction and reflection, crosshole testing, downhole testing, spectral analysis of surface waves, ground penetrating radar, electromagnetic wave measurement, and induced polarization. They are used for a variety of reasons, from archaeological purposes to geological and mining investigations.

subsurface scanning

scan lines to guve soil strength

Comprehensive site investigation and Monitoring services


This phase includes construction control, which involves making informed decisions about the materials that will work best for the project based on the characteristics of the soil.A comprehensive site investigation helps lower the risk of unexpected ground conditions during development, time delays, and significant cost implications. It also reduces potential risks to the health and safety of site workers and the general public, as well as environmental risks to human health and vegetation.In addition to site investigation, monitoring services are also provided in various sectors including oil and gas, water, subsea cables, ports, and harbours. These services involve the collation of desk study information, appraisal of the data, assessment of the ground conditions, and the provision of an interpretative report.In conclusion, a comprehensive site investigation and monitoring services are essential for the successful completion of any building project. They provide a solid foundation for accurate site assessment, risk identification, and design optimization

seismic field surveys

Geotechnical investigations provide information on subsurface soil conditions, which are crucial for design purposes. Geotechnical engineers analyze the stability of natural and constructed slopes and structures and investigate soil and rock conditions through drilling, sampling, and testing. These investigations may include standard penetration test borings, rock coring, pavement coring, field infiltration testing, and groundwater table determination. They may also involve bulk soil sampling, undisturbed soil sampling, and groundwater monitoring and sampling.

CPT surveys

Groundwater location and management are also crucial aspects of site development. Understanding the groundwater table and potential pathways for contaminant migration is essential for ensuring environmental safety and sustainability.

Project management involves investigation planning, budget control, reporting, and analysis. It ensures that all these processes are carried out efficiently and effectively, adhering to the project timeline and budget. The project manager may also use tools such as neighborhood perception surveys, market research, marketing and positioning strategies, and proposal preparation to assist in the planning and execution of the project.In conclusion, site development and project management involve a series of intricate and interconnected processes that ensure the orderly and sustainable development of land. These processes require a deep understanding of the environment and conditions of the proposed development area, meticulous planning, and efficient execution.

Groundsearch's International Bases have successfully delivered innovative, cost effective, and results-driven solutions to a wide array of projects in Mongolia, Cambodia, and Africa. We strive to provide locally relevant solutions that will ensure added value to your project.


Analyze Rock Base and Geotechnical data gathered from MASW Mapping down to depths of 100m or greater, allowing for the direct determination of soil stiffness and strength. Additionally, evaluate the potential for liquefaction and correlate the results with SPT/Drill Hole information and other pertinent site data.



Solve site failure issues - investigate and remediate

Piezometers - water level monitoring

Crosshole surveys


Calculate site dewatering response

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Exploration Services

Groundsearch actively involved with multiple international exploration programs in locations as diverse as Mongolia, Cambodia and Africa, as well as operations throughout New Zealand.

We have a diverse set of capabilities, and a strong base of experience in Asia and surrounds.


Grant is a qualified person to report to ASX and TSX stock exchanges. He has sign off against JORC (Australia) amd 43101 (Canada) -- we can provide more details on request

Mapping of geology and geological targets

african targets

Analyse airborne data and develop targets

imagery analysis





Two key concepts are Greenfield and Brownfield. A Greenfield project refers to a brand new initiative developed from scratch, not based on any existing systems or code. It's like building on a greenfield site, land that has yet to be developed. On the other hand, a Brownfield project utilizes previously developed resources, similar to redeveloping a brownfield site, land that has been built on before. Both types of projects have their unique risks, costs, and benefits.In the exploration phase of a project, methods such as auger, trenching, and pitting are used.

Exploration drilling


Trenching and test pitting allow for shallow exploration of easily excavated rock or soil materials, enabling visual inspection of strata. This is crucial in logging profiles and selecting samples. Pitting refers to the formation of small pits in a surface due to corrosion, a factor to consider during site development.

Mapping and data collection

field mapping and sample collection

Stream sediment survey design

stream sediments

Design of Geochemical programs


Pan concentrates

Pan samples
3d view of possible pit design

Pit design

  • Project generation and consulting


  • Greenfield/Brownfield program design

  • Auger, Trenching and Pitting and follow up ground geophysics

  • Detailed surveys and drill target generation / resource definition

Detailed surveys and drill target generation are part of the reconnaissance and prospecting stages of a project. These stages generate resource data with clearly defined degrees of geological assurance, which is essential for the mineral extraction process that typically begins with the G4 stage.

In conclusion, project generation involves a series of steps from idea conception to detailed exploration and target generation. Whether it's a Greenfield or Brownfield project, each stage requires careful planning, execution, and monitoring to ensure successful outcomes



Data integration

Data analysis

Geology interpetatiom

Groundsearch is a company that has been around for a long time and is known for its good underground technology. They hire experts to help their customers get important information. They use special tools and always work hard.

Financial evaluation

financial evaluation

With the backing of our established experience in exploration projects throughout New Zealand, Australia, Asia and the Pacific, Groundsearch can manage exploration programs effectively and efficiently.

  1. Ground  selection - Acquisition of licenses 

  2. Design and execution of field programs from startup through to resource measurement,

  3. Management of the projects to international standards

  4. Reporting compliant with JORC to Australian Stock exchange and 43-101 Canadian Stock exchange

To discuss what we can do for your project contact Principal Geological Analyst Grant Roberts ( or +855 10 863111.

Contact Info

For general info on project management and consulting contact Grant Roberts:

Ph: +855 10 863111


contact us on Facebook

Or fill in our reach out form for more information (survey questionnaire on its way)

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Bore hole services and Bore Geophysics

Borehole Geophysics

Borehole geophysics has proven to be an indispensable tool for our clients in coal exploration, mineral mining, coal seam gas exploration and scientific research to name just a few. It is an incredible value-adding tool to confirm target depths, characterise overburden, assess dipping angles and much, much more.

Site investigation planning

Groundsearch uses state of the art combination tools from Century Geophysical Corporation to maximise the information gathered from the hole, while maintaining usability and the convenience to transport the equipment to operate from nearly anywhere (and over the years our clients have occasionally pushed this “anywhere” claim to extremes! – See “Our Projects”) Our most popular tools are listed here, but we can get in a tool to suit almost any endeavour very quickly.

With the backing of a huge amount of experience in exploration projects all over NZ, and a comprehensive support structure, we can manage your borehole geophysics effectively and efficiently. Email us for more information.

Borehole Tools

9239 Dual Density Sonde – Coal Combination Tool

The Series 9239, Compensated Density logging tool uses the two focused density detectors to compute borehole compensated density real time while logging. No post processing required to produce CDL bulk density. Additionally, the tool also records natural gamma, caliper , medium guard resistivity, and borehole temperature.

The 9239 is a very well proven, diverse and reliable tool which is ideally suited for coal exploration as well as a variety of other applications. It delineates coal seams with fantastic accuracy, and can operate inside or outside the water column, and even inside or outside drill rods or casing.

Acoustic Scanner

The Acoustic Televiewer takes an oriented “picture” of the borehole using high-resolution sound waves. This acoustic picture is displayed in both amplitude and travel time. This information is used to detect bedding planes, fractures, and other hole anomalies without the need to have clear fluid filling the boreholes.

The televiewer digitizes 256 measurements around the borehole at each high-resolution sample interval (.005 meters/.02 feet). This data is oriented to North and displayed real-time while logging using the Visual Compu-Log software. Analysis includes color adjustment, fracture dip and strike determination, and classification of anomaly. It allows information to be displayed on the graphical screen, plot, and in report format. Optionally, the tool can be equipped with a natural gamma sensor.

Full Wave Sonic

The Full Wave Sonic tool contains a single transmitter and dual receiver to record formation travel times. The full wave form data is also recorded simultaneously, along with near and far travel times, borehole-compensated delta time, calculated sonic porosity, receiver gains, near/far amplitudes and natural gamma. The sonic or acoustic log uses the basic principle of sound waves traveling through a media. The Century sonic system uses a single transmitter and dual receiver system for recording the travel times of the formation. The receivers are spaced approximately 2 and 3 feet, from the transmitter. Therefore, a 0.3 m (1 ft.) calculation can be made to measure this interval transit time.

9410 Dipmeter

The Dipmeter tool is a formation strike and dip directional probe primarily used in mining and environmental logging applications. Additionally, the tool also records natural gamma, X-Y calipers, and borehole deviation is computed from the slant angle and bearing measurements calculated from the inclinometer and magnetometer sensors. To ensure accurate strike and dip measurements in small-diameter holes, special care should be taken when calibrating the calipers to maximize their accuracy.The image to the right shows a set of dipmeter data with “tadpoles” giving dip and dip direction of the bedding structures. The bed boundary is picked from the current logs. The boundary is then cross-correlated between each pad data and merged to give the dip of the best “plane ” through this data.

Contact Info

For general info on project management and consulting contact Grant Roberts:

Ph: +855 10 863111 +6421 710 922


Or fill in our reach out form for more information (survey questionnaire on its way)