Drilling Services
Deep geotechnical borings, rock coring, packer testing, instrumentation, and specialized tunnel investigation support.
Read MoreServices
Specialized technical services for complex geotechnical, tunnel, utility, and infrastructure work.
Service lines
Built around the work that reduces subsurface risk.
7NT provides complex drilling, testing, inspection, engineering, construction, and laboratory services connected by field precision and defensible data.
Inspection / Testing (QA)
Construction inspection and materials testing for earthwork, structures, tunnels, shafts, pavements, concrete, steel, and masonry.
Read MoreEngineering Services
Geotechnical engineering, investigation planning, foundation design, retaining structures, pavements, and subsurface risk reduction.
Read MoreUtility Construction Services
Utility construction, manhole rehabilitation, sewer repair, and field execution for municipal infrastructure systems.
Read MoreLaboratory Testing Services
Soil, rock, aggregate, masonry, concrete, and asphalt laboratory testing aligned with widely accepted ASTM and AASHTO procedures.
Read MoreExplore by need
Find the right starting point quickly.
Each path leads to the full capability page with original-source service detail, related projects, and a direct contact path.
Need drilling support?
Start with borings, coring, packer testing, instrumentation, and deep tunnel investigation support.
Explore DrillingNeed quality assurance?
Route inspection, testing, and documentation needs to the construction QA team.
Explore Inspection / TestingNeed engineering analysis?
Connect subsurface investigation, foundation design, retaining systems, pavements, and stability analysis.
Explore EngineeringNeed utility construction?
Get manhole rehabilitation, sewer repair, inflow control, and municipal work order execution to the right team.
Explore ConstructionNeed lab testing?
Coordinate soil, rock, aggregate, concrete, masonry, and asphalt testing with the laboratory.
Explore Laboratory TestingProject-service matrix
Capabilities tied to project proof.
Project categories and service lines stay connected so owners can move from what they need to examples of related 7NT work.
Drilling
Drilling
Deep geotechnical borings, rock coring, packer testing, instrumentation, and specialized tunnel investigation support.
Inspection/Testing
Inspection / Testing
Construction inspection and materials testing for earthwork, structures, tunnels, shafts, pavements, concrete, steel, and masonry.
Engineering
Engineering
Geotechnical engineering, investigation planning, foundation design, retaining structures, pavements, and subsurface risk reduction.
Construction
Construction
Utility construction, manhole rehabilitation, sewer repair, and field execution for municipal infrastructure systems.
Drilling
Laboratory Testing
Soil, rock, aggregate, masonry, concrete, and asphalt laboratory testing aligned with widely accepted ASTM and AASHTO procedures.
Do you need a specialized team for a complex project?
Talk with 7NT about drilling, engineering, lab testing, construction inspection, or utility construction needs.