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OptiClino: Longhole Drill Rig Alignment System

A fresh approach to longhole drill navigation.

  • Elimination of Human Error
  • Elimination of Survey Markup
  • 2x accuracy over Fibre Optic Gyro Systems

Elimination of Survey Markup.

OptiClino uses existing survey wall stations, which means:

  • Less work for surveyors
  • Drill doesn't wait for markups
  • No rework for survey remarking or refreshing paint marks
Green LED OptiClino marker pucks mounted on a drill boom, illuminated in an underground drive

Elimination of Human Error.

Every operator is an expert:

  • No lining up on paint marks — the driller is guided to sub-millimetre precision via a tablet.
  • No possibility of setting up on the wrong hole or drilling the wrong angle.
  • Can't cheat the system. All setups are recorded as-drilled.
  • No need to articulate the rig onto laser lines; operators set up straight in the drive.
Drill rig boom extended in an underground tunnel with green OptiClino markers illuminated

2× Accuracy over Fibre Optic Gyro and OEM Systems.

9,189 holes surveyed across 29 underground mines in Western Australia during 2025 showed the following average drill setup error over a 20 m hole:

  • OEM1.46° · 509 mm at toe
  • Fibre Optic Gyro1.33° · 469 mm at toe
  • OptiClino0.58° · 202 mm at toe
OptiClino tablet display showing target versus actual drill dip and dump matched to a tenth of a degree, with sub-metre accuracy crosshairs

Drill setup error across the Underground Mining Industry (2025)

Measured against every common longhole setup method — OEM Rig Alignment and Fibre Optic Gyro — across 9,189 production holes in 29 underground mines.

OEM rig alignmentFibre optic gyroOptiClinoMine names hidden for client confidentiality.
Fimiston (OptiClino) shown with permission.
OEM ALIGNMENT SYSTEMS
2.55%
Mean setup error · 1.46° · 510 mm / 20 m hole
FIBRE OPTIC GYRO SYSTEMS
2.32%
Mean setup error · 1.33° · 464 mm / 20 m hole
OPTICLINO
1.01%
Mean setup error · 0.58° · 202 mm / 20 m hole
4.0%3.0%2.0%1.0%0.0%
2.55%
2.32%
1.01%
Karrowa Deeps
Mt Tarndale
Boolanga
Wungarrie North
Jindabar
Carrow Sth
Yallengo
Mt Pendine
Korrawup
Burranda Deeps
Tellanga
Dwarra East
Mungari
Yilcarn Sth
Paddington Rise
Nardoo
Murrin Deeps
Coolgarra
Bardoc North
Tindale
Wallaby Sth
Jundee Far
Agnara
Bronzewing Deeps
Kanowna
Plutonic East
Darlot
Granny Sth
Fimiston
Underground mines surveyed
OEM ALIGNMENT SYSTEMS
Mean setup error
2.55%
1.46° · 510 mm / 20 m hole
FIBRE OPTIC GYRO SYSTEMS
Mean setup error
2.32%
1.33° · 464 mm / 20 m hole
OPTICLINO
Mean setup error
1.01%
0.58° · 202 mm / 20 m hole

Deployment

01

Retrofits to any drill

Bolt-on hardware, no rig replacement, no OEM lock-in.

02

Any underground hard-rock mine

Gold, base metals, longhole or development — same kit.

03

Benefits from the first ring

Crews drill to design the day it's commissioned.

Get in touch

Contact Us
OptiClino truck and drill rig on an underground drive