Pluton Resources Cockatoo Island

Key Elements

Service: Geotechnical Drilling
Year: 2014


Hagstrom Drilling were engaged by Pluton Resources to complete a drilling project on Cockatoo Island. The drilling project included geotechnical drilling and instrumentation installation for the Stage 4 seawall construction and the completion of a resource definition drill hole from the existing seawall for the Stage 5 Expansion Project.  

Cockatoo Island is a hematite mining operation jointly owned by Pluton Resources Ltd and Wise Energy Group, and is located approximately 140km north of Derby in the Yampi sound, located off the northern Kimberley coast of Western Australia. 

The project consisted of approximately 650m of drilling through existing embankment rockfill, seafloor coral reef and coralline sediments to facilitate geotechnical logging, sampling, testing and the installation of instrumentation by Coffey Mining.

Requirements for the project included the provision of a track mounted drilling rig, track mounted drill support unit, wheeled support truck and wheeled crew truck, equipped with all the necessary plant, equipment and spare parts required to operate continuously for the duration of the project.

The Cockatoo island project utilised Rig 8 – a newly commissioned Comacchio MC 900P Track Mounted Drill Rig using a Symmetrix Overburden drilling system.  

Working in tidal zones provided challenges as drilling equipment was regularly moved in and out of the drill pads to coincide with tidal movements, that included night and day shift operations.  

Drilling ground conditions were tough varying from the upper Armor Rock, Coraline sediments and Mud Stone, with the Overburden drilling system performing well in these difficult conditions.  

Following the Geotechnical work, Hagstrom Drilling highlighted their range of capabilities by completing a 300m deep angled resource hole on the existing seawall for the Stage 5 Expansion Project using PQ/HQ triple tube plus a 60m deep vertical PQ triple exploration borehole was completed in the east of Cockatoo Island.

Hagstrom Drilling take pride in their ability to continually provide a quality service safely and adhere to their clients requirements, in any conditions.