Safety
Inducted crews, daily pre-start checks, job safety analyses and incident reporting to the client's standard.
What we do
Drilling that delivers a logged, sampled hole, not just metres
Spheroid Engineering Limited provides exploration drilling as a contractor to mining houses, junior explorers and project developers, from the first scout holes on a licence to resource definition and mine-development drilling.
What sets our drilling apart is who stands behind the rig. Our drilling crews are supervised by registered geotechnical engineers and geologists who have logged core, run in-situ tests and installed instrumentation on major projects. The hole is planned for the question it must answer, the core or chips are logged and sampled to the client's protocol, and the data arrive in a form that goes straight into a resource model or a geotechnical design.
The same rigs and crews carry out geotechnical investigation drilling for dams, plant sites and tailings facilities, and hydrogeological drilling for monitoring and dewatering bores.
How a drilling programme runs
01
Programme design
Targets, hole depths and methods agreed with the client's geologists, then a costed programme with a realistic schedule.
02
Mobilisation
Access, pads and water sorted before the rig arrives. Environmental and safety plans in place and inducted.
03
Drilling and logging
Daily metres reported. Core and chips logged, photographed, sampled and dispatched under chain of custody.
04
Close-out
Downhole surveys, collar pick-ups, hole rehabilitation and a final data package reconciled against the programme.
Safety and environment
Drilled safely, left clean
Every programme runs under a site-specific safety plan and an environmental method statement, written by the same environmental consultants who prepare our clients' impact assessments.
Environment
Sump management, spill kits, water sourcing agreed with landholders, and pads and tracks rehabilitated at close-out.
Data integrity
Sample numbering, duplicates and standards inserted to protocol, so results stand up to audit and resource reporting.
Geotechnical drilling and survey for the ZAMMSA Kabwe Regional Hub
Geotechnical drilling and survey for the ZAMMSA Kasama Regional Hub
Installation of vibrating-wire piezometers at Kariba North Bank
Standard penetration tests for an EGENCO office building, Mangochi, Malawi
Lugeon tests from the cofferdam piers, Kariba Dam Rehabilitation Project
Drilling, geotechnical and Lugeon tests at the proposed CEC Changa hydropower dam site
Core logging and rock-strength characterisation, Mopani Copper Mines
Planning a drilling programme?
Send us the target area, the hole list and the sampling protocol, and we will quote metres, mobilisation and a schedule.