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Engineering Surveys Mining and Underground Surveys 3D Laser Scanning Mapping Consulting
What we do More
We are professionals with many years of experience in Sweden and the Czech Republic. We are not afraid of darkness, dampness, polar night or strict legislation and regulations. We are aware of responsibility and at the same time dare to do really big and complex projects because we have education, experience and top equipment. And if we need consultations in related fields, we have someone to contact.
Geodetic networks+
Creation and maintenance of geodetic control networks - underground and on the surface
Stabilization
We choose the quality of the stabilization of points based on the purpose of the network, required accuracy, and customer's wishes
Analysis
In the preparatory phase of the project, the requirements for accuracy are analyzed carefully and, on the basis of a mathematical model, we suggest the right measurement technology
Surveys
We perform complete surveying and levelling of the setting-out network, as well as an analysis of the achieved quality. In underground areas, we provide connecting survey and orientation measurement, plumbing, and depth measurement. If required, we can arrange gyroscopic determination of the direction.
Maintenance and inspection
Like any technical structure, the point field also requires maintenance and inspection. We design and execute these activities for you in a manner assuring reliability of the required stability and accuracy.
Drilling plans+
Drilling plans
Tunnel contour
Based on project documentation, we produce digital contours, which serve further as a basis for the design of the drilling plan, i.e. accurate geometric definition of each individual borehole in the face.
Borehole layout
Our specialists will help you with the design of the digital drilling plans to ensure the best layout of boreholes possible, as well as their geometric accuracy.
Analysis
In conjunction with the construction documentation, we perform an analysis of the mass, and of the underbreak and overbreak areas. That may result in a recommendation for the optimization of the drilling plan and reduction of economic costs while keeping the requirements for the geometric parameters of the structure.
Setting out+
Setting out and Excavation Management
Three-dimensional positioning
We will arrange for you the setting out of the three-dimensional position of a mining structure and a structure carried out using mining techniques.
Detailed setting out
We can provide setting out of structures within both surface and underground mines in all stages of the development of the mine. We also specialize in surveying structures carried out using mining techniques such as traffic tunnels, collectors, underground warehouses, and large-scale earthworks.
Excavation management
We have extensive experience particularly with the drill/blast method. We provide direct setting out using a total station, data preparation for the semi-automatic navigation of drilling rigs or navigation using a fixed laser. We have broad experience with the Atlas Copco / Epirock systems.
Setting of the drilling rigs for technological and exploration boreholes
We provide installation of machinery and navigation for drilling survey, technological and special production boreholes, including raiseboring.
As-Built Documentation+
As-Built Documentation

The survey part of the as-built documentation is an important part of the final handover of the structure. It often serves as the basis for further technical solutions during the operation, maintenance, planning, and assessment of security risks. We also provide this service of course, often in conjunction with setting out and creating a geodetic point field.

Geotechnical Monitoring+
Geotechnical Monitoring

We carry out monitoring of shifts and deformations by means of surveying methods within the campaigns of geotechnical monitoring. We have experience with long-term measurement in underground mines and tunnels, as well as on surface structures.

Laser Scanning+
Laser Scanning

Laser scanning of mine structures, both horizontal and vertical, is an important method of three-dimensional data collection providing a high degree of comprehensiveness and detail.

3D outputs
We generate outputs, from black and white to colourful point clouds with high resolution to vector 3D models.
2D outputs
We generate straightforward 2D outputs such as sections and profiles enabling easier orientation in challenging projects.
Analysis
We analyze data, and we carry out the calculations of mass and underbreak and overbreak areas for you; by comparing several phases of the measurement, we can we comprehensively analyze the deformations and shifts of structures. In tunnels and mines, we also do scanning with high density of points, or with HDR colour information, providing a valuable data file used for the purpose of a geotechnical analysis.

Our specialists in mine surveying and engineering surveying in underground areas have extensive experience from projects of various size, duration and difficulty. We participate in the biggest projects in Europe, e.g. new mine level in the largest underground iron mine in the world in Kiruna, Sweden, or tunnel bypass in Stockholm. We provide services ranging from the creation of geodetical networks, through survey management of the excavation, as-built documentation, volume calculations and geotechnical monitoring, to setting-out and documentation of the technological equipment.
900m

We have experience with surveying shafts up to one kilometer deep.
40km

We left our professional footprint in fourty kilometers of tunnels.
Geodetic networks+ Drilling plans+ Setting out+ As-Built Documentation+ Geotechnical Monitoring+ Laser Scanning+ Inquirykeyboard_arrow_right
What we do
Creation and maintenance of geodetic control networks - underground and on the surface
Stabilization
We choose the quality of the stabilization of points based on the purpose of the network, required accuracy, and customer's wishes
Analysis
In the preparatory phase of the project, the requirements for accuracy are analyzed carefully and, on the basis of a mathematical model, we suggest the right measurement technology
Surveys
We perform complete surveying and levelling of the setting-out network, as well as an analysis of the achieved quality. In underground areas, we provide connecting survey and orientation measurement, plumbing, and depth measurement. If required, we can arrange gyroscopic determination of the direction.
Maintenance and inspection
Like any technical structure, the point field also requires maintenance and inspection. We design and execute these activities for you in a manner assuring reliability of the required stability and accuracy.
Realization
filter_center_focus Measuring the geodetic control network, Boliden, 2017
clear
Drilling plans
Tunnel contour
Based on project documentation, we produce digital contours, which serve further as a basis for the design of the drilling plan, i.e. accurate geometric definition of each individual borehole in the face.
Borehole layout
Our specialists will help you with the design of the digital drilling plans to ensure the best layout of boreholes possible, as well as their geometric accuracy.
Analysis
In conjunction with the construction documentation, we perform an analysis of the mass, and of the underbreak and overbreak areas. That may result in a recommendation for the optimization of the drilling plan and reduction of economic costs while keeping the requirements for the geometric parameters of the structure.
Realization
filter_center_focus Setting of the drilling rig, LKAB Malmberget, Sweden, 2018
clear
Setting out and Excavation Management
Three-dimensional positioning
We will arrange for you the setting out of the three-dimensional position of a mining structure and a structure carried out using mining techniques.
Detailed setting out
We can provide setting out of structures within both surface and underground mines in all stages of the development of the mine. We also specialize in surveying structures carried out using mining techniques such as traffic tunnels, collectors, underground warehouses, and large-scale earthworks.
Excavation management
We have extensive experience particularly with the drill/blast method. We provide direct setting out using a total station, data preparation for the semi-automatic navigation of drilling rigs or navigation using a fixed laser. We have broad experience with the Atlas Copco / Epirock systems.
Setting of the drilling rigs for technological and exploration boreholes
We provide installation of machinery and navigation for drilling survey, technological and special production boreholes, including raiseboring.
Realization
filter_center_focus Setting of the drilling rig, LKAB Malmberget, Sweden, 2018
clear
As-Built Documentation

The survey part of the as-built documentation is an important part of the final handover of the structure. It often serves as the basis for further technical solutions during the operation, maintenance, planning, and assessment of security risks. We also provide this service of course, often in conjunction with setting out and creating a geodetic point field.

Realization
filter_center_focus Documentation for a shaft section, NCC, Sweden 2016
clear
Geotechnical Monitoring

We carry out monitoring of shifts and deformations by means of surveying methods within the campaigns of geotechnical monitoring. We have experience with long-term measurement in underground mines and tunnels, as well as on surface structures.

Realization
filter_center_focus Förbyfart tunnel bypass, Stockholm, Sweden, 2018
clear
Laser Scanning

Laser scanning of mine structures, both horizontal and vertical, is an important method of three-dimensional data collection providing a high degree of comprehensiveness and detail.

3D outputs
We generate outputs, from black and white to colourful point clouds with high resolution to vector 3D models.
2D outputs
We generate straightforward 2D outputs such as sections and profiles enabling easier orientation in challenging projects.
Analysis
We analyze data, and we carry out the calculations of mass and underbreak and overbreak areas for you; by comparing several phases of the measurement, we can we comprehensively analyze the deformations and shifts of structures. In tunnels and mines, we also do scanning with high density of points, or with HDR colour information, providing a valuable data file used for the purpose of a geotechnical analysis.
Realization
filter_center_focus Point cloud as an intermediate product of the documentation of the lining, Malmberget, Sweden, 2018
clear
Our specialists in mine surveying and engineering surveying in underground areas have extensive experience from projects of various size, duration and difficulty. We participate in the biggest projects in Europe, e.g. new mine level in the largest underground iron mine in the world in Kiruna, Sweden, or tunnel bypass in Stockholm. We provide services ranging from the creation of geodetical networks, through survey management of the excavation, as-built documentation, volume calculations and geotechnical monitoring, to setting-out and documentation of the technological equipment.
We work with certified and regularly calibrated Leica and Trimble equipment.
900m

We have experience with surveying shafts up to one kilometer deep.
40km

We left our professional footprint in fourty kilometers of tunnels.
Recommendation
Trigorn is a reliable and very professional organization that is an important partner/resource for us in our projects. They have a remarkable ability to select very suitable skillful staff for any type of survey project.keyboard_arrow_right
Lennart Gimring, Survey & Mapping Manager, AF Consult AF Consult
Trigorn is a reliable and very professional organization that is an important partner/resource for us in our projects. They have a remarkable ability to select very suitable skillful staff for any type of survey project.keyboard_arrow_right
Lennart Gimring, Survey & Mapping Manager, AF Consult AF Consult
Trigorn is a reliable and very professional organization that is an important partner/resource for us in our projects. They have a remarkable ability to select very suitable skillful staff for any type of survey project.keyboard_arrow_right
Lennart Gimring, Survey & Mapping Manager, AF Consult AF Consult
Realized projects
2015-2019
Kiruna, Sweden
Renovation of the LKAB mining shafts
2016-2019
Stockholm, Sweden
Förbifart tunnel bypass / Skärholmen / Stockholm
2015-2019
LKAB Kiruna, Sweden
Installation of machinery as part of the renovation of mining machinery
2014-2018
Kiruna and Malmberget, Sveden
Long-term project for drilling ventilation shafts 2 m in diameter
2014-2018
Kiruna and Malmberget, Sweden
Long-term project for drilling energy and water distribution systems
2017-2018
Malmberget, Sweden
Project for the extension of the mine and the subsurface transport paths
2017-2018
Boliden, Sweden
Renovation of a mining shaft
2018
Aitik, Sweden
Construction of technological equipment for the processing of multi-metallic ore
2018
Boliden, Sweden
Construction of traffic tunnels in the Renströms and Kristineberg mines
2016-2018
Svappavaara, Sweden
Support for short-term planning of mining / Leveäniemi open-pit mine
2015-2017
Kiruna, Sweden
Opening of a new minie level in the LKAB Kiruna iron ore mine
2016
Mertainen, Sweden
Construction of a primary crusher for processing iron ore
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