Contract for 24 Enedis Regions (excluding complex crossings SNCF and Voies Navigables France) and associated studies:

- Directional boreholes with a length of 30 m to a maximum of 250 m

- Soil studies for directional drilling: G1, G2 AVP or G2 pro

Contract for directional drilling works (excluding complex crossings SNCF and Voies Navigables France) and associated studies:

- Directional boreholes with a length of 30 m to a maximum of 250 m

- Soil studies for directional drilling: G1, G2 AVP or G2 pro

Preparation of the preliminary technical file,

Possible feasibility study

Soil study for G1, G2 AVP or G2 PRO directional boreholes,

Possible detection of sensitive networks not classified as A

Organization and participation in pre-work meetings,

Submission of execution file

Information for local authorities and network operators,

Regulatory marking of networks before work

Carrying out entrance and exit searches,

Carrying out pilot drilling,

The bore of the pilot borehole to the dimensions adapted to the diameter of the tube or sleeve to be laid, The supply and welding of the barrel,

The installation of the barrel (including unwinding if the duct is packed in drums), the switching of a duct left on hold after completion

Waste management (drilling fluid, mud, ,..) and disposal in a collection site corresponding to the regulatory classification of type 3 (ISDI). Otherwise, (ISDND Class 2 and ISDD Class 1), the Account Holder shall submit to the Company a corresponding invoice as well as the Waste Tracking Slip,

All constraints related to the drilling of the borehole (water supply and drainage in particular),

The realization of the Geo-referenced Plan of the Constructed Structure of the duct laid by directional drilling, with the corresponding profile in class A.

Refurbishment and refurbishment of entrance and exit areas

Application Limitations:

All directional drilling

• Not related to the installation of networks,

• Less than 30m in length or more than 250m in length,

• Railway sub-track dedicated to passenger transport,

• Sub-watercourses with a width of more than 100m from bank to bank,

• With sea or river exit (landing),

• With casing,

• With a pressure limit of more than 300 MPa or a particle size of more than 300 mm,

• With a firing depth of more than 18m,

• Whose guidance mode is an "Optitrack" gyroscopic guidance, imposed by the environment, by a manager or by electromagnetic disturbances,

• Whose number of scabbards in the same shot (for the same borehole) is greater than 4,

• The use of trenchless techniques other than directional drilling, such as auger drilling, pipe pushing, micro-drilling, micro-tunnelling, etc.

Contract for directional drilling works (excluding complex crossings SNCF and Voies Navigables France) and associated studies:

- Directional boreholes with a length of 30 m to a maximum of 250 m

- Soil studies for directional drilling: G1, G2 AVP or G2 pro

Preparation of the preliminary technical file,

Possible feasibility study

Soil study for G1, G2 AVP or G2 PRO directional boreholes,

Possible detection of sensitive networks not classified as A

Organization and participation in pre-work meetings,

Submission of execution file

Information for local authorities and network operators,

Regulatory marking of networks before work

Carrying out entrance and exit searches,

Carrying out pilot drilling,

The bore of the pilot borehole to the dimensions adapted to the diameter of the tube or sleeve to be laid, The supply and welding of the barrel,

The installation of the barrel (including unwinding if the duct is packed in drums), the switching of a duct left on hold after completion

Waste management (drilling fluid, mud, ,..) and disposal in a collection site corresponding to the regulatory classification of type 3 (ISDI). Otherwise, (ISDND Class 2 and ISDD Class 1), the Account Holder shall submit to the Company a corresponding invoice as well as the Waste Tracking Slip,

All constraints related to the drilling of the borehole (water supply and drainage in particular),

The realization of the Geo-referenced Plan of the Constructed Structure of the duct laid by directional drilling, with the corresponding profile in class A.

Refurbishment and refurbishment of entrance and exit areas

Application Limitations:

All directional drilling

• Not related to the installation of networks,

• Less than 30m in length or more than 250m in length,

• Railway sub-track dedicated to passenger transport,

• Sub-watercourses with a width of more than 100m from bank to bank,

• With sea or river exit (landing),

• With casing,

• With a pressure limit of more than 300 MPa or a particle size of more than 300 mm,

• With a firing depth of more than 18m,

• Whose guidance mode is an "Optitrack" gyroscopic guidance, imposed by the environment, by a manager or by electromagnetic disturbances,

• Whose number of scabbards in the same shot (for the same borehole) is greater than 4,

• The use of trenchless techniques other than directional drilling, such as auger drilling, pipe pushing, micro-drilling, micro-tunnelling, etc.

Contract for directional drilling works (excluding complex crossings SNCF and Voies Navigables France) and associated studies:

- Directional boreholes with a length of 30 m to a maximum of 250 m

- Soil studies for directional drilling: G1, G2 AVP or G2 pro

Preparation of the preliminary technical file,

Possible feasibility study

Soil study for G1, G2 AVP or G2 PRO directional boreholes,

Possible detection of sensitive networks not classified as A

Organization and participation in pre-work meetings,

Submission of execution file

Information for local authorities and network operators,

Regulatory marking of networks before work

Carrying out entrance and exit searches,

Carrying out pilot drilling,

The bore of the pilot borehole to the dimensions adapted to the diameter of the tube or sleeve to be laid, The supply and welding of the barrel,

The installation of the barrel (including unwinding if the duct is packed in drums), the switching of a duct left on hold after completion

Waste management (drilling fluid, mud, ,..) and disposal in a collection site corresponding to the regulatory classification of type 3 (ISDI). Otherwise, (ISDND Class 2 and ISDD Class 1), the Account Holder shall submit to the Company a corresponding invoice as well as the Waste Tracking Slip,

All constraints related to the drilling of the borehole (water supply and drainage in particular),

The realization of the Geo-referenced Plan of the Constructed Structure of the duct laid by directional drilling, with the corresponding profile in class A.

Refurbishment and refurbishment of entrance and exit areas

Application Limitations:

All directional drilling

• Not related to the installation of networks,

• Less than 30m in length or more than 250m in length,

• Railway sub-track dedicated to passenger transport,

• Sub-watercourses with a width of more than 100m from bank to bank,

• With sea or river exit (landing),

• With casing,

• With a pressure limit of more than 300 MPa or a particle size of more than 300 mm,

• With a firing depth of more than 18m,

• Whose guidance mode is an "Optitrack" gyroscopic guidance, imposed by the environment, by a manager or by electromagnetic disturbances,

• Whose number of scabbards in the same shot (for the same borehole) is greater than 4,

• The use of trenchless techniques other than directional drilling, such as auger drilling, pipe pushing, micro-drilling, micro-tunnelling, etc.

Contract for directional drilling works (excluding complex crossings SNCF and Voies Navigables France) and associated studies:

- Directional boreholes with a length of 30 m to a maximum of 250 m

- Soil studies for directional drilling: G1, G2 AVP or G2 pro

Preparation of the preliminary technical file,

Possible feasibility study

Soil study for G1, G2 AVP or G2 PRO directional boreholes,

Possible detection of sensitive networks not classified as A

Organization and participation in pre-work meetings,

Submission of execution file

Information for local authorities and network operators,

Regulatory marking of networks before work

Carrying out entrance and exit searches,

Carrying out pilot drilling,

The bore of the pilot borehole to the dimensions adapted to the diameter of the tube or sleeve to be laid, The supply and welding of the barrel,

The installation of the barrel (including unwinding if the duct is packed in drums), the switching of a duct left on hold after completion

Waste management (drilling fluid, mud, ,..) and disposal in a collection site corresponding to the regulatory classification of type 3 (ISDI). Otherwise, (ISDND Class 2 and ISDD Class 1), the Account Holder shall submit to the Company a corresponding invoice as well as the Waste Tracking Slip,

All constraints related to the drilling of the borehole (water supply and drainage in particular),

The realization of the Geo-referenced Plan of the Constructed Structure of the duct laid by directional drilling, with the corresponding profile in class A.

Refurbishment and refurbishment of entrance and exit areas

Application Limitations:

All directional drilling

• Not related to the installation of networks,

• Less than 30m in length or more than 250m in length,

• Railway sub-track dedicated to passenger transport,

• Sub-watercourses with a width of more than 100m from bank to bank,

• With sea or river exit (landing),

• With casing,

• With a pressure limit of more than 300 MPa or a particle size of more than 300 mm,

• With a firing depth of more than 18m,

• Whose guidance mode is an "Optitrack" gyroscopic guidance, imposed by the environment, by a manager or by electromagnetic disturbances,

• Whose number of scabbards in the same shot (for the same borehole) is greater than 4,

• The use of trenchless techniques other than directional drilling, such as auger drilling, pipe pushing, micro-drilling, micro-tunnelling, etc.

Contract for directional drilling works (excluding complex crossings SNCF and Voies Navigables France) and associated studies:

- Directional boreholes with a length of 30 m to a maximum of 250 m

- Soil studies for directional drilling: G1, G2 AVP or G2 pro

Preparation of the preliminary technical file,

Possible feasibility study

Soil study for G1, G2 AVP or G2 PRO directional boreholes,

Possible detection of sensitive networks not classified as A

Organization and participation in pre-work meetings,

Submission of execution file

Information for local authorities and network operators,

Regulatory marking of networks before work

Carrying out entrance and exit searches,

Carrying out pilot drilling,

The bore of the pilot borehole to the dimensions adapted to the diameter of the tube or sleeve to be laid, The supply and welding of the barrel,

The installation of the barrel (including unwinding if the duct is packed in drums), the switching of a duct left on hold after completion

Waste management (drilling fluid, mud, ,..) and disposal in a collection site corresponding to the regulatory classification of type 3 (ISDI). Otherwise, (ISDND Class 2 and ISDD Class 1), the Account Holder shall submit to the Company a corresponding invoice as well as the Waste Tracking Slip,

All constraints related to the drilling of the borehole (water supply and drainage in particular),

The realization of the Geo-referenced Plan of the Constructed Structure of the duct laid by directional drilling, with the corresponding profile in class A.

Refurbishment and refurbishment of entrance and exit areas

Application Limitations:

All directional drilling

• Not related to the installation of networks,

• Less than 30m in length or more than 250m in length,

• Railway sub-track dedicated to passenger transport,

• Sub-watercourses with a width of more than 100m from bank to bank,

• With sea or river exit (landing),

• With casing,

• With a pressure limit of more than 300 MPa or a particle size of more than 300 mm,

• With a firing depth of more than 18m,

• Whose guidance mode is an "Optitrack" gyroscopic guidance, imposed by the environment, by a manager or by electromagnetic disturbances,

• Whose number of scabbards in the same shot (for the same borehole) is greater than 4,

• The use of trenchless techniques other than directional drilling, such as auger drilling, pipe pushing, micro-drilling, micro-tunnelling, etc.

Contract for directional drilling works (excluding complex crossings SNCF and Voies Navigables France) and associated studies:

- Directional boreholes with a length of 30 m to a maximum of 250 m

- Soil studies for directional drilling: G1, G2 AVP or G2 pro

Preparation of the preliminary technical file,

Possible feasibility study

Soil study for G1, G2 AVP or G2 PRO directional boreholes,

Possible detection of sensitive networks not classified as A

Organization and participation in pre-work meetings,

Submission of execution file

Information for local authorities and network operators,

Regulatory marking of networks before work

Carrying out entrance and exit searches,

Carrying out pilot drilling,

The bore of the pilot borehole to the dimensions adapted to the diameter of the tube or sleeve to be laid, The supply and welding of the barrel,

The installation of the barrel (including unwinding if the duct is packed in drums), the switching of a duct left on hold after completion

Waste management (drilling fluid, mud, ,..) and disposal in a collection site corresponding to the regulatory classification of type 3 (ISDI). Otherwise, (ISDND Class 2 and ISDD Class 1), the Account Holder shall submit to the Company a corresponding invoice as well as the Waste Tracking Slip,

All constraints related to the drilling of the borehole (water supply and drainage in particular),

The realization of the Geo-referenced Plan of the Constructed Structure of the duct laid by directional drilling, with the corresponding profile in class A.

Refurbishment and refurbishment of entrance and exit areas

Application Limitations:

All directional drilling

• Not related to the installation of networks,

• Less than 30m in length or more than 250m in length,

• Railway sub-track dedicated to passenger transport,

• Sub-watercourses with a width of more than 100m from bank to bank,

• With sea or river exit (landing),

• With casing,

• With a pressure limit of more than 300 MPa or a particle size of more than 300 mm,

• With a firing depth of more than 18m,

• Whose guidance mode is an "Optitrack" gyroscopic guidance, imposed by the environment, by a manager or by electromagnetic disturbances,

• Whose number of scabbards in the same shot (for the same borehole) is greater than 4,

• The use of trenchless techniques other than directional drilling, such as auger drilling, pipe pushing, micro-drilling, micro-tunnelling, etc.

Contract for directional drilling works (excluding complex crossings SNCF and Voies Navigables France) and associated studies:

- Directional boreholes with a length of 30 m to a maximum of 250 m

- Soil studies for directional drilling: G1, G2 AVP or G2 pro

Preparation of the preliminary technical file,

Possible feasibility study

Soil study for G1, G2 AVP or G2 PRO directional boreholes,

Possible detection of sensitive networks not classified as A

Organization and participation in pre-work meetings,

Submission of execution file

Information for local authorities and network operators,

Regulatory marking of networks before work

Carrying out entrance and exit searches,

Carrying out pilot drilling,

The bore of the pilot borehole to the dimensions adapted to the diameter of the tube or sleeve to be laid, The supply and welding of the barrel,

The installation of the barrel (including unwinding if the duct is packed in drums), the switching of a duct left on hold after completion

Waste management (drilling fluid, mud, ,..) and disposal in a collection site corresponding to the regulatory classification of type 3 (ISDI). Otherwise, (ISDND Class 2 and ISDD Class 1), the Account Holder shall submit to the Company a corresponding invoice as well as the Waste Tracking Slip,

All constraints related to the drilling of the borehole (water supply and drainage in particular),

The realization of the Geo-referenced Plan of the Constructed Structure of the duct laid by directional drilling, with the corresponding profile in class A.

Refurbishment and refurbishment of entrance and exit areas

Application Limitations:

All directional drilling

• Not related to the installation of networks,

• Less than 30m in length or more than 250m in length,

• Railway sub-track dedicated to passenger transport,

• Sub-watercourses with a width of more than 100m from bank to bank,

• With sea or river exit (landing),

• With casing,

• With a pressure limit of more than 300 MPa or a particle size of more than 300 mm,

• With a firing depth of more than 18m,

• Whose guidance mode is an "Optitrack" gyroscopic guidance, imposed by the environment, by a manager or by electromagnetic disturbances,

• Whose number of scabbards in the same shot (for the same borehole) is greater than 4,

• The use of trenchless techniques other than directional drilling, such as auger drilling, pipe pushing, micro-drilling, micro-tunnelling, etc.

Contract for directional drilling works (excluding complex crossings SNCF and Voies Navigables France) and associated studies:

- Directional boreholes with a length of 30 m to a maximum of 250 m

- Soil studies for directional drilling: G1, G2 AVP or G2 pro

Preparation of the preliminary technical file,

Possible feasibility study

Soil study for G1, G2 AVP or G2 PRO directional boreholes,

Possible detection of sensitive networks not classified as A

Organization and participation in pre-work meetings,

Submission of execution file

Information for local authorities and network operators,

Regulatory marking of networks before work

Carrying out entrance and exit searches,

Carrying out pilot drilling,

The bore of the pilot borehole to the dimensions adapted to the diameter of the tube or sleeve to be laid, The supply and welding of the barrel,

The installation of the barrel (including unwinding if the duct is packed in drums), the switching of a duct left on hold after completion

Waste management (drilling fluid, mud, ,..) and disposal in a collection site corresponding to the regulatory classification of type 3 (ISDI). Otherwise, (ISDND Class 2 and ISDD Class 1), the Account Holder shall submit to the Company a corresponding invoice as well as the Waste Tracking Slip,

All constraints related to the drilling of the borehole (water supply and drainage in particular),

The realization of the Geo-referenced Plan of the Constructed Structure of the duct laid by directional drilling, with the corresponding profile in class A.

Refurbishment and refurbishment of entrance and exit areas

Application Limitations:

All directional drilling

• Not related to the installation of networks,

• Less than 30m in length or more than 250m in length,

• Railway sub-track dedicated to passenger transport,

• Sub-watercourses with a width of more than 100m from bank to bank,

• With sea or river exit (landing),

• With casing,

• With a pressure limit of more than 300 MPa or a particle size of more than 300 mm,

• With a firing depth of more than 18m,

• Whose guidance mode is an "Optitrack" gyroscopic guidance, imposed by the environment, by a manager or by electromagnetic disturbances,

• Whose number of scabbards in the same shot (for the same borehole) is greater than 4,

• The use of trenchless techniques other than directional drilling, such as auger drilling, pipe pushing, micro-drilling, micro-tunnelling, etc.

Contract for directional drilling works (excluding complex crossings SNCF and Voies Navigables France) and associated studies:

- Directional boreholes with a length of 30 m to a maximum of 250 m

- Soil studies for directional drilling: G1, G2 AVP or G2 pro

Preparation of the preliminary technical file,

Possible feasibility study

Soil study for G1, G2 AVP or G2 PRO directional boreholes,

Possible detection of sensitive networks not classified as A

Organization and participation in pre-work meetings,

Submission of execution file

Information for local authorities and network operators,

Regulatory marking of networks before work

Carrying out entrance and exit searches,

Carrying out pilot drilling,

The bore of the pilot borehole to the dimensions adapted to the diameter of the tube or sleeve to be laid, The supply and welding of the barrel,

The installation of the barrel (including unwinding if the duct is packed in drums), the switching of a duct left on hold after completion

Waste management (drilling fluid, mud, ,..) and disposal in a collection site corresponding to the regulatory classification of type 3 (ISDI). Otherwise, (ISDND Class 2 and ISDD Class 1), the Account Holder shall submit to the Company a corresponding invoice as well as the Waste Tracking Slip,

All constraints related to the drilling of the borehole (water supply and drainage in particular),

The realization of the Geo-referenced Plan of the Constructed Structure of the duct laid by directional drilling, with the corresponding profile in class A.

Refurbishment and refurbishment of entrance and exit areas

Application Limitations:

All directional drilling

• Not related to the installation of networks,

• Less than 30m in length or more than 250m in length,

• Railway sub-track dedicated to passenger transport,

• Sub-watercourses with a width of more than 100m from bank to bank,

• With sea or river exit (landing),

• With casing,

• With a pressure limit of more than 300 MPa or a particle size of more than 300 mm,

• With a firing depth of more than 18m,

• Whose guidance mode is an "Optitrack" gyroscopic guidance, imposed by the environment, by a manager or by electromagnetic disturbances,

• Whose number of scabbards in the same shot (for the same borehole) is greater than 4,

• The use of trenchless techniques other than directional drilling, such as auger drilling, pipe pushing, micro-drilling, micro-tunnelling, etc.

Contract for directional drilling works (excluding complex crossings SNCF and Voies Navigables France) and associated studies:

- Directional boreholes with a length of 30 m to a maximum of 250 m

- Soil studies for directional drilling: G1, G2 AVP or G2 pro

Preparation of the preliminary technical file,

Possible feasibility study

Soil study for G1, G2 AVP or G2 PRO directional boreholes,

Possible detection of sensitive networks not classified as A

Organization and participation in pre-work meetings,

Submission of execution file

Information for local authorities and network operators,

Regulatory marking of networks before work

Carrying out entrance and exit searches,

Carrying out pilot drilling,

The bore of the pilot borehole to the dimensions adapted to the diameter of the tube or sleeve to be laid, The supply and welding of the barrel,

The installation of the barrel (including unwinding if the duct is packed in drums), the switching of a duct left on hold after completion

Waste management (drilling fluid, mud, ,..) and disposal in a collection site corresponding to the regulatory classification of type 3 (ISDI). Otherwise, (ISDND Class 2 and ISDD Class 1), the Account Holder shall submit to the Company a corresponding invoice as well as the Waste Tracking Slip,

All constraints related to the drilling of the borehole (water supply and drainage in particular),

The realization of the Geo-referenced Plan of the Constructed Structure of the duct laid by directional drilling, with the corresponding profile in class A.

Refurbishment and refurbishment of entrance and exit areas

Application Limitations:

All directional drilling

• Not related to the installation of networks,

• Less than 30m in length or more than 250m in length,

• Railway sub-track dedicated to passenger transport,

• Sub-watercourses with a width of more than 100m from bank to bank,

• With sea or river exit (landing),

• With casing,

• With a pressure limit of more than 300 MPa or a particle size of more than 300 mm,

• With a firing depth of more than 18m,

• Whose guidance mode is an "Optitrack" gyroscopic guidance, imposed by the environment, by a manager or by electromagnetic disturbances,

• Whose number of scabbards in the same shot (for the same borehole) is greater than 4,

• The use of trenchless techniques other than directional drilling, such as auger drilling, pipe pushing, micro-drilling, micro-tunnelling, etc.

Contract for directional drilling works (excluding complex crossings SNCF and Voies Navigables France) and associated studies:

- Directional boreholes with a length of 30 m to a maximum of 250 m

- Soil studies for directional drilling: G1, G2 AVP or G2 pro

Preparation of the preliminary technical file,

Possible feasibility study

Soil study for G1, G2 AVP or G2 PRO directional boreholes,

Possible detection of sensitive networks not classified as A

Organization and participation in pre-work meetings,

Submission of execution file

Information for local authorities and network operators,

Regulatory marking of networks before work

Carrying out entrance and exit searches,

Carrying out pilot drilling,

The bore of the pilot borehole to the dimensions adapted to the diameter of the tube or sleeve to be laid, The supply and welding of the barrel,

The installation of the barrel (including unwinding if the duct is packed in drums), the switching of a duct left on hold after completion

Waste management (drilling fluid, mud, ,..) and disposal in a collection site corresponding to the regulatory classification of type 3 (ISDI). Otherwise, (ISDND Class 2 and ISDD Class 1), the Account Holder shall submit to the Company a corresponding invoice as well as the Waste Tracking Slip,

All constraints related to the drilling of the borehole (water supply and drainage in particular),

The realization of the Geo-referenced Plan of the Constructed Structure of the duct laid by directional drilling, with the corresponding profile in class A.

Refurbishment and refurbishment of entrance and exit areas

Application Limitations:

All directional drilling

• Not related to the installation of networks,

• Less than 30m in length or more than 250m in length,

• Railway sub-track dedicated to passenger transport,

• Sub-watercourses with a width of more than 100m from bank to bank,

• With sea or river exit (landing),

• With casing,

• With a pressure limit of more than 300 MPa or a particle size of more than 300 mm,

• With a firing depth of more than 18m,

• Whose guidance mode is an "Optitrack" gyroscopic guidance, imposed by the environment, by a manager or by electromagnetic disturbances,

• Whose number of scabbards in the same shot (for the same borehole) is greater than 4,

• The use of trenchless techniques other than directional drilling, such as auger drilling, pipe pushing, micro-drilling, micro-tunnelling, etc.

Contract for directional drilling works (excluding complex crossings SNCF and Voies Navigables France) and associated studies:

- Directional boreholes with a length of 30 m to a maximum of 250 m

- Soil studies for directional drilling: G1, G2 AVP or G2 pro

Preparation of the preliminary technical file,

Possible feasibility study

Soil study for G1, G2 AVP or G2 PRO directional boreholes,

Possible detection of sensitive networks not classified as A

Organization and participation in pre-work meetings,

Submission of execution file

Information for local authorities and network operators,

Regulatory marking of networks before work

Carrying out entrance and exit searches,

Carrying out pilot drilling,

The bore of the pilot borehole to the dimensions adapted to the diameter of the tube or sleeve to be laid, The supply and welding of the barrel,

The installation of the barrel (including unwinding if the duct is packed in drums), the switching of a duct left on hold after completion

Waste management (drilling fluid, mud, ,..) and disposal in a collection site corresponding to the regulatory classification of type 3 (ISDI). Otherwise, (ISDND Class 2 and ISDD Class 1), the Account Holder shall submit to the Company a corresponding invoice as well as the Waste Tracking Slip,

All constraints related to the drilling of the borehole (water supply and drainage in particular),

The realization of the Geo-referenced Plan of the Constructed Structure of the duct laid by directional drilling, with the corresponding profile in class A.

Refurbishment and refurbishment of entrance and exit areas

Application Limitations:

All directional drilling

• Not related to the installation of networks,

• Less than 30m in length or more than 250m in length,

• Railway sub-track dedicated to passenger transport,

• Sub-watercourses with a width of more than 100m from bank to bank,

• With sea or river exit (landing),

• With casing,

• With a pressure limit of more than 300 MPa or a particle size of more than 300 mm,

• With a firing depth of more than 18m,

• Whose guidance mode is an "Optitrack" gyroscopic guidance, imposed by the environment, by a manager or by electromagnetic disturbances,

• Whose number of scabbards in the same shot (for the same borehole) is greater than 4,

• The use of trenchless techniques other than directional drilling, such as auger drilling, pipe pushing, micro-drilling, micro-tunnelling, etc.

Contract for directional drilling works (excluding complex crossings SNCF and Voies Navigables France) and associated studies:

- Directional boreholes with a length of 30 m to a maximum of 250 m

- Soil studies for directional drilling: G1, G2 AVP or G2 pro

Preparation of the preliminary technical file,

Possible feasibility study

Soil study for G1, G2 AVP or G2 PRO directional boreholes,

Possible detection of sensitive networks not classified as A

Organization and participation in pre-work meetings,

Submission of execution file

Information for local authorities and network operators,

Regulatory marking of networks before work

Carrying out entrance and exit searches,

Carrying out pilot drilling,

The bore of the pilot borehole to the dimensions adapted to the diameter of the tube or sleeve to be laid, The supply and welding of the barrel,

The installation of the barrel (including unwinding if the duct is packed in drums), the switching of a duct left on hold after completion

Waste management (drilling fluid, mud, ,..) and disposal in a collection site corresponding to the regulatory classification of type 3 (ISDI). Otherwise, (ISDND Class 2 and ISDD Class 1), the Account Holder shall submit to the Company a corresponding invoice as well as the Waste Tracking Slip,

All constraints related to the drilling of the borehole (water supply and drainage in particular),

The realization of the Geo-referenced Plan of the Constructed Structure of the duct laid by directional drilling, with the corresponding profile in class A.

Refurbishment and refurbishment of entrance and exit areas

Application Limitations:

All directional drilling

• Not related to the installation of networks,

• Less than 30m in length or more than 250m in length,

• Railway sub-track dedicated to passenger transport,

• Sub-watercourses with a width of more than 100m from bank to bank,

• With sea or river exit (landing),

• With casing,

• With a pressure limit of more than 300 MPa or a particle size of more than 300 mm,

• With a firing depth of more than 18m,

• Whose guidance mode is an "Optitrack" gyroscopic guidance, imposed by the environment, by a manager or by electromagnetic disturbances,

• Whose number of scabbards in the same shot (for the same borehole) is greater than 4,

• The use of trenchless techniques other than directional drilling, such as auger drilling, pipe pushing, micro-drilling, micro-tunnelling, etc.

Contract for directional drilling works (excluding complex crossings SNCF and Voies Navigables France) and associated studies:

- Directional boreholes with a length of 30 m to a maximum of 250 m

- Soil studies for directional drilling: G1, G2 AVP or G2 pro

Preparation of the preliminary technical file,

Possible feasibility study

Soil study for G1, G2 AVP or G2 PRO directional boreholes,

Possible detection of sensitive networks not classified as A

Organization and participation in pre-work meetings,

Submission of execution file

Information for local authorities and network operators,

Regulatory marking of networks before work

Carrying out entrance and exit searches,

Carrying out pilot drilling,

The bore of the pilot borehole to the dimensions adapted to the diameter of the tube or sleeve to be laid, The supply and welding of the barrel,

The installation of the barrel (including unwinding if the duct is packed in drums), the switching of a duct left on hold after completion

Waste management (drilling fluid, mud, ,..) and disposal in a collection site corresponding to the regulatory classification of type 3 (ISDI). Otherwise, (ISDND Class 2 and ISDD Class 1), the Account Holder shall submit to the Company a corresponding invoice as well as the Waste Tracking Slip,

All constraints related to the drilling of the borehole (water supply and drainage in particular),

The realization of the Geo-referenced Plan of the Constructed Structure of the duct laid by directional drilling, with the corresponding profile in class A.

Refurbishment and refurbishment of entrance and exit areas

Application Limitations:

All directional drilling

• Not related to the installation of networks,

• Less than 30m in length or more than 250m in length,

• Railway sub-track dedicated to passenger transport,

• Sub-watercourses with a width of more than 100m from bank to bank,

• With sea or river exit (landing),

• With casing,

• With a pressure limit of more than 300 MPa or a particle size of more than 300 mm,

• With a firing depth of more than 18m,

• Whose guidance mode is an "Optitrack" gyroscopic guidance, imposed by the environment, by a manager or by electromagnetic disturbances,

• Whose number of scabbards in the same shot (for the same borehole) is greater than 4,

• The use of trenchless techniques other than directional drilling, such as auger drilling, pipe pushing, micro-drilling, micro-tunnelling, etc.

Contract for directional drilling works (excluding complex crossings SNCF and Voies Navigables France) and associated studies:

- Directional boreholes with a length of 30 m to a maximum of 250 m

- Soil studies for directional drilling: G1, G2 AVP or G2 pro

Preparation of the preliminary technical file,

Possible feasibility study

Soil study for G1, G2 AVP or G2 PRO directional boreholes,

Possible detection of sensitive networks not classified as A

Organization and participation in pre-work meetings,

Submission of execution file

Information for local authorities and network operators,

Regulatory marking of networks before work

Carrying out entrance and exit searches,

Carrying out pilot drilling,

The bore of the pilot borehole to the dimensions adapted to the diameter of the tube or sleeve to be laid, The supply and welding of the barrel,

The installation of the barrel (including unwinding if the duct is packed in drums), the switching of a duct left on hold after completion

Waste management (drilling fluid, mud, ,..) and disposal in a collection site corresponding to the regulatory classification of type 3 (ISDI). Otherwise, (ISDND Class 2 and ISDD Class 1), the Account Holder shall submit to the Company a corresponding invoice as well as the Waste Tracking Slip,

All constraints related to the drilling of the borehole (water supply and drainage in particular),

The realization of the Geo-referenced Plan of the Constructed Structure of the duct laid by directional drilling, with the corresponding profile in class A.

Refurbishment and refurbishment of entrance and exit areas

Application Limitations:

All directional drilling

• Not related to the installation of networks,

• Less than 30m in length or more than 250m in length,

• Railway sub-track dedicated to passenger transport,

• Sub-watercourses with a width of more than 100m from bank to bank,

• With sea or river exit (landing),

• With casing,

• With a pressure limit of more than 300 MPa or a particle size of more than 300 mm,

• With a firing depth of more than 18m,

• Whose guidance mode is an "Optitrack" gyroscopic guidance, imposed by the environment, by a manager or by electromagnetic disturbances,

• Whose number of scabbards in the same shot (for the same borehole) is greater than 4,

• The use of trenchless techniques other than directional drilling, such as auger drilling, pipe pushing, micro-drilling, micro-tunnelling, etc.

Contract for directional drilling works (excluding complex crossings SNCF and Voies Navigables France) and associated studies:

- Directional boreholes with a length of 30 m to a maximum of 250 m

- Soil studies for directional drilling: G1, G2 AVP or G2 pro

Preparation of the preliminary technical file,

Possible feasibility study

Soil study for G1, G2 AVP or G2 PRO directional boreholes,

Possible detection of sensitive networks not classified as A

Organization and participation in pre-work meetings,

Submission of execution file

Information for local authorities and network operators,

Regulatory marking of networks before work

Carrying out entrance and exit searches,

Carrying out pilot drilling,

The bore of the pilot borehole to the dimensions adapted to the diameter of the tube or sleeve to be laid, The supply and welding of the barrel,

The installation of the barrel (including unwinding if the duct is packed in drums), the switching of a duct left on hold after completion

Waste management (drilling fluid, mud, ,..) and disposal in a collection site corresponding to the regulatory classification of type 3 (ISDI). Otherwise, (ISDND Class 2 and ISDD Class 1), the Account Holder shall submit to the Company a corresponding invoice as well as the Waste Tracking Slip,

All constraints related to the drilling of the borehole (water supply and drainage in particular),

The realization of the Geo-referenced Plan of the Constructed Structure of the duct laid by directional drilling, with the corresponding profile in class A.

Refurbishment and refurbishment of entrance and exit areas

Application Limitations:

All directional drilling

• Not related to the installation of networks,

• Less than 30m in length or more than 250m in length,

• Railway sub-track dedicated to passenger transport,

• Sub-watercourses with a width of more than 100m from bank to bank,

• With sea or river exit (landing),

• With casing,

• With a pressure limit of more than 300 MPa or a particle size of more than 300 mm,

• With a firing depth of more than 18m,

• Whose guidance mode is an "Optitrack" gyroscopic guidance, imposed by the environment, by a manager or by electromagnetic disturbances,

• Whose number of scabbards in the same shot (for the same borehole) is greater than 4,

• The use of trenchless techniques other than directional drilling, such as auger drilling, pipe pushing, micro-drilling, micro-tunnelling, etc.

Contract for directional drilling works (excluding complex crossings SNCF and Voies Navigables France) and associated studies:

- Directional boreholes with a length of 30 m to a maximum of 250 m

- Soil studies for directional drilling: G1, G2 AVP or G2 pro

Preparation of the preliminary technical file,

Possible feasibility study

Soil study for G1, G2 AVP or G2 PRO directional boreholes,

Possible detection of sensitive networks not classified as A

Organization and participation in pre-work meetings,

Submission of execution file

Information for local authorities and network operators,

Regulatory marking of networks before work

Carrying out entrance and exit searches,

Carrying out pilot drilling,

The bore of the pilot borehole to the dimensions adapted to the diameter of the tube or sleeve to be laid, The supply and welding of the barrel,

The installation of the barrel (including unwinding if the duct is packed in drums), the switching of a duct left on hold after completion

Waste management (drilling fluid, mud, ,..) and disposal in a collection site corresponding to the regulatory classification of type 3 (ISDI). Otherwise, (ISDND Class 2 and ISDD Class 1), the Account Holder shall submit to the Company a corresponding invoice as well as the Waste Tracking Slip,

All constraints related to the drilling of the borehole (water supply and drainage in particular),

The realization of the Geo-referenced Plan of the Constructed Structure of the duct laid by directional drilling, with the corresponding profile in class A.

Refurbishment and refurbishment of entrance and exit areas

Application Limitations:

All directional drilling

• Not related to the installation of networks,

• Less than 30m in length or more than 250m in length,

• Railway sub-track dedicated to passenger transport,

• Sub-watercourses with a width of more than 100m from bank to bank,

• With sea or river exit (landing),

• With casing,

• With a pressure limit of more than 300 MPa or a particle size of more than 300 mm,

• With a firing depth of more than 18m,

• Whose guidance mode is an "Optitrack" gyroscopic guidance, imposed by the environment, by a manager or by electromagnetic disturbances,

• Whose number of scabbards in the same shot (for the same borehole) is greater than 4,

• The use of trenchless techniques other than directional drilling, such as auger drilling, pipe pushing, micro-drilling, micro-tunnelling, etc.

Contract for directional drilling works (excluding complex crossings SNCF and Voies Navigables France) and associated studies:

- Directional boreholes with a length of 30 m to a maximum of 250 m

- Soil studies for directional drilling: G1, G2 AVP or G2 pro

Preparation of the preliminary technical file,

Possible feasibility study

Soil study for G1, G2 AVP or G2 PRO directional boreholes,

Possible detection of sensitive networks not classified as A

Organization and participation in pre-work meetings,

Submission of execution file

Information for local authorities and network operators,

Regulatory marking of networks before work

Carrying out entrance and exit searches,

Carrying out pilot drilling,

The bore of the pilot borehole to the dimensions adapted to the diameter of the tube or sleeve to be laid, The supply and welding of the barrel,

The installation of the barrel (including unwinding if the duct is packed in drums), the switching of a duct left on hold after completion

Waste management (drilling fluid, mud, ,..) and disposal in a collection site corresponding to the regulatory classification of type 3 (ISDI). Otherwise, (ISDND Class 2 and ISDD Class 1), the Account Holder shall submit to the Company a corresponding invoice as well as the Waste Tracking Slip,

All constraints related to the drilling of the borehole (water supply and drainage in particular),

The realization of the Geo-referenced Plan of the Constructed Structure of the duct laid by directional drilling, with the corresponding profile in class A.

Refurbishment and refurbishment of entrance and exit areas

Application Limitations:

All directional drilling

• Not related to the installation of networks,

• Less than 30m in length or more than 250m in length,

• Railway sub-track dedicated to passenger transport,

• Sub-watercourses with a width of more than 100m from bank to bank,

• With sea or river exit (landing),

• With casing,

• With a pressure limit of more than 300 MPa or a particle size of more than 300 mm,

• With a firing depth of more than 18m,

• Whose guidance mode is an "Optitrack" gyroscopic guidance, imposed by the environment, by a manager or by electromagnetic disturbances,

• Whose number of scabbards in the same shot (for the same borehole) is greater than 4,

• The use of trenchless techniques other than directional drilling, such as auger drilling, pipe pushing, micro-drilling, micro-tunnelling, etc.

Contract for directional drilling works (excluding complex crossings SNCF and Voies Navigables France) and associated studies:

- Directional boreholes with a length of 30 m to a maximum of 250 m

- Soil studies for directional drilling: G1, G2 AVP or G2 pro

Preparation of the preliminary technical file,

Possible feasibility study

Soil study for G1, G2 AVP or G2 PRO directional boreholes,

Possible detection of sensitive networks not classified as A

Organization and participation in pre-work meetings,

Submission of execution file

Information for local authorities and network operators,

Regulatory marking of networks before work

Carrying out entrance and exit searches,

Carrying out pilot drilling,

The bore of the pilot borehole to the dimensions adapted to the diameter of the tube or sleeve to be laid, The supply and welding of the barrel,

The installation of the barrel (including unwinding if the duct is packed in drums), the switching of a duct left on hold after completion

Waste management (drilling fluid, mud, ,..) and disposal in a collection site corresponding to the regulatory classification of type 3 (ISDI). Otherwise, (ISDND Class 2 and ISDD Class 1), the Account Holder shall submit to the Company a corresponding invoice as well as the Waste Tracking Slip,

All constraints related to the drilling of the borehole (water supply and drainage in particular),

The realization of the Geo-referenced Plan of the Constructed Structure of the duct laid by directional drilling, with the corresponding profile in class A.

Refurbishment and refurbishment of entrance and exit areas

Application Limitations:

All directional drilling

• Not related to the installation of networks,

• Less than 30m in length or more than 250m in length,

• Railway sub-track dedicated to passenger transport,

• Sub-watercourses with a width of more than 100m from bank to bank,

• With sea or river exit (landing),

• With casing,

• With a pressure limit of more than 300 MPa or a particle size of more than 300 mm,

• With a firing depth of more than 18m,

• Whose guidance mode is an "Optitrack" gyroscopic guidance, imposed by the environment, by a manager or by electromagnetic disturbances,

• Whose number of scabbards in the same shot (for the same borehole) is greater than 4,

• The use of trenchless techniques other than directional drilling, such as auger drilling, pipe pushing, micro-drilling, micro-tunnelling, etc.

Contract for directional drilling works (excluding complex crossings SNCF and Voies Navigables France) and associated studies:

- Directional boreholes with a length of 30 m to a maximum of 250 m

- Soil studies for directional drilling: G1, G2 AVP or G2 pro

Preparation of the preliminary technical file,

Possible feasibility study

Soil study for G1, G2 AVP or G2 PRO directional boreholes,

Possible detection of sensitive networks not classified as A

Organization and participation in pre-work meetings,

Submission of execution file

Information for local authorities and network operators,

Regulatory marking of networks before work

Carrying out entrance and exit searches,

Carrying out pilot drilling,

The bore of the pilot borehole to the dimensions adapted to the diameter of the tube or sleeve to be laid, The supply and welding of the barrel,

The installation of the barrel (including unwinding if the duct is packed in drums), the switching of a duct left on hold after completion

Waste management (drilling fluid, mud, ,..) and disposal in a collection site corresponding to the regulatory classification of type 3 (ISDI). Otherwise, (ISDND Class 2 and ISDD Class 1), the Account Holder shall submit to the Company a corresponding invoice as well as the Waste Tracking Slip,

All constraints related to the drilling of the borehole (water supply and drainage in particular),

The realization of the Geo-referenced Plan of the Constructed Structure of the duct laid by directional drilling, with the corresponding profile in class A.

Refurbishment and refurbishment of entrance and exit areas

Application Limitations:

All directional drilling

• Not related to the installation of networks,

• Less than 30m in length or more than 250m in length,

• Railway sub-track dedicated to passenger transport,

• Sub-watercourses with a width of more than 100m from bank to bank,

• With sea or river exit (landing),

• With casing,

• With a pressure limit of more than 300 MPa or a particle size of more than 300 mm,

• With a firing depth of more than 18m,

• Whose guidance mode is an "Optitrack" gyroscopic guidance, imposed by the environment, by a manager or by electromagnetic disturbances,

• Whose number of scabbards in the same shot (for the same borehole) is greater than 4,

• The use of trenchless techniques other than directional drilling, such as auger drilling, pipe pushing, micro-drilling, micro-tunnelling, etc.

Contract for directional drilling works (excluding complex crossings SNCF and Voies Navigables France) and associated studies:

- Directional boreholes with a length of 30 m to a maximum of 250 m

- Soil studies for directional drilling: G1, G2 AVP or G2 pro

Preparation of the preliminary technical file,

Possible feasibility study

Soil study for G1, G2 AVP or G2 PRO directional boreholes,

Possible detection of sensitive networks not classified as A

Organization and participation in pre-work meetings,

Submission of execution file

Information for local authorities and network operators,

Regulatory marking of networks before work

Carrying out entrance and exit searches,

Carrying out pilot drilling,

The bore of the pilot borehole to the dimensions adapted to the diameter of the tube or sleeve to be laid, The supply and welding of the barrel,

The installation of the barrel (including unwinding if the duct is packed in drums), the switching of a duct left on hold after completion

Waste management (drilling fluid, mud, ,..) and disposal in a collection site corresponding to the regulatory classification of type 3 (ISDI). Otherwise, (ISDND Class 2 and ISDD Class 1), the Account Holder shall submit to the Company a corresponding invoice as well as the Waste Tracking Slip,

All constraints related to the drilling of the borehole (water supply and drainage in particular),

The realization of the Geo-referenced Plan of the Constructed Structure of the duct laid by directional drilling, with the corresponding profile in class A.

Refurbishment and refurbishment of entrance and exit areas

Application Limitations:

All directional drilling

• Not related to the installation of networks,

• Less than 30m in length or more than 250m in length,

• Railway sub-track dedicated to passenger transport,

• Sub-watercourses with a width of more than 100m from bank to bank,

• With sea or river exit (landing),

• With casing,

• With a pressure limit of more than 300 MPa or a particle size of more than 300 mm,

• With a firing depth of more than 18m,

• Whose guidance mode is an "Optitrack" gyroscopic guidance, imposed by the environment, by a manager or by electromagnetic disturbances,

• Whose number of scabbards in the same shot (for the same borehole) is greater than 4,

• The use of trenchless techniques other than directional drilling, such as auger drilling, pipe pushing, micro-drilling, micro-tunnelling, etc.

Contract for directional drilling works (excluding complex crossings SNCF and Voies Navigables France) and associated studies:

- Directional boreholes with a length of 30 m to a maximum of 250 m

- Soil studies for directional drilling: G1, G2 AVP or G2 pro

Preparation of the preliminary technical file,

Possible feasibility study

Soil study for G1, G2 AVP or G2 PRO directional boreholes,

Possible detection of sensitive networks not classified as A

Organization and participation in pre-work meetings,

Submission of execution file

Information for local authorities and network operators,

Regulatory marking of networks before work

Carrying out entrance and exit searches,

Carrying out pilot drilling,

The bore of the pilot borehole to the dimensions adapted to the diameter of the tube or sleeve to be laid, The supply and welding of the barrel,

The installation of the barrel (including unwinding if the duct is packed in drums), the switching of a duct left on hold after completion

Waste management (drilling fluid, mud, ,..) and disposal in a collection site corresponding to the regulatory classification of type 3 (ISDI). Otherwise, (ISDND Class 2 and ISDD Class 1), the Account Holder shall submit to the Company a corresponding invoice as well as the Waste Tracking Slip,

All constraints related to the drilling of the borehole (water supply and drainage in particular),

The realization of the Geo-referenced Plan of the Constructed Structure of the duct laid by directional drilling, with the corresponding profile in class A.

Refurbishment and refurbishment of entrance and exit areas

Application Limitations:

All directional drilling

• Not related to the installation of networks,

• Less than 30m in length or more than 250m in length,

• Railway sub-track dedicated to passenger transport,

• Sub-watercourses with a width of more than 100m from bank to bank,

• With sea or river exit (landing),

• With casing,

• With a pressure limit of more than 300 MPa or a particle size of more than 300 mm,

• With a firing depth of more than 18m,

• Whose guidance mode is an "Optitrack" gyroscopic guidance, imposed by the environment, by a manager or by electromagnetic disturbances,

• Whose number of scabbards in the same shot (for the same borehole) is greater than 4,

• The use of trenchless techniques other than directional drilling, such as auger drilling, pipe pushing, micro-drilling, micro-tunnelling, etc.

Contract for directional drilling works (excluding complex crossings SNCF and Voies Navigables France) and associated studies:

- Directional boreholes with a length of 30 m to a maximum of 250 m

- Soil studies for directional drilling: G1, G2 AVP or G2 pro

Preparation of the preliminary technical file,

Possible feasibility study

Soil study for G1, G2 AVP or G2 PRO directional boreholes,

Possible detection of sensitive networks not classified as A

Organization and participation in pre-work meetings,

Submission of execution file

Information for local authorities and network operators,

Regulatory marking of networks before work

Carrying out entrance and exit searches,

Carrying out pilot drilling,

The bore of the pilot borehole to the dimensions adapted to the diameter of the tube or sleeve to be laid, The supply and welding of the barrel,

The installation of the barrel (including unwinding if the duct is packed in drums), the switching of a duct left on hold after completion

Waste management (drilling fluid, mud, ,..) and disposal in a collection site corresponding to the regulatory classification of type 3 (ISDI). Otherwise, (ISDND Class 2 and ISDD Class 1), the Account Holder shall submit to the Company a corresponding invoice as well as the Waste Tracking Slip,

All constraints related to the drilling of the borehole (water supply and drainage in particular),

The realization of the Geo-referenced Plan of the Constructed Structure of the duct laid by directional drilling, with the corresponding profile in class A.

Refurbishment and refurbishment of entrance and exit areas

Application Limitations:

All directional drilling

• Not related to the installation of networks,

• Less than 30m in length or more than 250m in length,

• Railway sub-track dedicated to passenger transport,

• Sub-watercourses with a width of more than 100m from bank to bank,

• With sea or river exit (landing),

• With casing,

• With a pressure limit of more than 300 MPa or a particle size of more than 300 mm,

• With a firing depth of more than 18m,

• Whose guidance mode is an "Optitrack" gyroscopic guidance, imposed by the environment, by a manager or by electromagnetic disturbances,

• Whose number of scabbards in the same shot (for the same borehole) is greater than 4,

• The use of trenchless techniques other than directional drilling, such as auger drilling, pipe pushing, micro-drilling, micro-tunnelling, etc.

Contract for directional drilling works (excluding complex crossings SNCF and Voies Navigables France) and associated studies:

- Directional boreholes with a length of 30 m to a maximum of 250 m

- Soil studies for directional drilling: G1, G2 AVP or G2 pro

Preparation of the preliminary technical file,

Possible feasibility study

Soil study for G1, G2 AVP or G2 PRO directional boreholes,

Possible detection of sensitive networks not classified as A

Organization and participation in pre-work meetings,

Submission of execution file

Information for local authorities and network operators,

Regulatory marking of networks before work

Carrying out entrance and exit searches,

Carrying out pilot drilling,

The bore of the pilot borehole to the dimensions adapted to the diameter of the tube or sleeve to be laid, The supply and welding of the barrel,

The installation of the barrel (including unwinding if the duct is packed in drums), the switching of a duct left on hold after completion

Waste management (drilling fluid, mud, ,..) and disposal in a collection site corresponding to the regulatory classification of type 3 (ISDI). Otherwise, (ISDND Class 2 and ISDD Class 1), the Account Holder shall submit to the Company a corresponding invoice as well as the Waste Tracking Slip,

All constraints related to the drilling of the borehole (water supply and drainage in particular),

The realization of the Geo-referenced Plan of the Constructed Structure of the duct laid by directional drilling, with the corresponding profile in class A.

Refurbishment and refurbishment of entrance and exit areas

Application Limitations:

All directional drilling

• Not related to the installation of networks,

• Less than 30m in length or more than 250m in length,

• Railway sub-track dedicated to passenger transport,

• Sub-watercourses with a width of more than 100m from bank to bank,

• With sea or river exit (landing),

• With casing,

• With a pressure limit of more than 300 MPa or a particle size of more than 300 mm,

• With a firing depth of more than 18m,

• Whose guidance mode is an "Optitrack" gyroscopic guidance, imposed by the environment, by a manager or by electromagnetic disturbances,

• Whose number of scabbards in the same shot (for the same borehole) is greater than 4,

• The use of trenchless techniques other than directional drilling, such as auger drilling, pipe pushing, micro-drilling, micro-tunnelling, etc.