DDH1 breaks drilling depth mark 

DDH1 has created history after drilling the deepest mineral core hole in Australia.

The record was achieved at Northern Star Resources’ Jundee gold mining operations near Wiluna in Western Australia, beating the previous core drill record by 200m, which was recorded at Kalgoorlie’s Super Pit in 2015 and reportedly stopped at 3011.5m. 

The drill was originally planned to stop at 3100m, but some intriguing indications made Northern Star push on. By its February 28 conclusion, the drill hole, which employed Sandvik NHD heavy duty rods rated to 3000m and a 2500m-rated Sandvik DE880 rig, had reached an impressive depth of 3217m. 

This was beyond the NHD drill rods and DE880 rigs rated capacity, but not beyond their safe technical limits, according to DDH1 CEO Murray Pollock.

“Sandvik’s 3000m rating for the NHD is conservative,” Mr Pollock said. 

“It’s a tough, very reliable drill rod which is obviously capable of more.”

Mr Pollock said if it wasn’t for Northern Star calling a halt, DDH1 could have continued drilling past the record depth, which had a true vertical depth of 2625.1m. 

A pioneer of deep directional drilling, Mr Pollock said pushing the drill boundaries was becoming a growing trend since most of the more accessible deposits had already been discovered, prompting exploration companies to use sophisticated geophysical methods to highlight deep structures.

Among other projects, DDH1 is currently drilling a 2950m deep hole at St Barbara’s Gwalia gold mine, north of Kalgoorlie. The company is also engaged in a significant number of other exploration drilling operations across WA, Northern Territory and the east coast.

Mr Pollock said for quality, reliability, safety, efficiency and productivity, Sandvik was the company’s top choice. 

“Sandvik’s the industry standard,” he said. “It’s the brand many of our client companies specifically ask for, with good reason. 

“It’s a great feeling to know you can have complete confidence in your rigs, drill rods and other drilling equipment.”

With the frontiers of exploration drilling continually expanding, DDH1 predicted there would soon be new records set through the company’s highly successful partnership with Sandvik.

Picture: DDH1 Managing Director Murray Pollock and Operations Director Matt Thurston.

latest news

FIFO camp to open doors soon at Agnew gold mine

Construction is under way on a new 800-bed village at the Agnew gold mine near Leinster, a development its South African owner says will improve the health and safety of its staff.

Read more

FMG auto haul truck crash ‘no failure’

Fortescue Metals Group insists a crash between two driverless dump trucks at its Christmas Creek iron ore mine in the Pilbara this week was not a failure of its autonomous haulage system.

Read more

Flinders to try win over delisting dissidents

The Takeovers Panel has accepted a range of undertakings by Flinders Mines aimed at making its proposed delisting fairer on minority shareholders of the company.

Read more

Newcrest profit doubles on record Cadia result

Australia’s top gold miner Newcrest has more than doubled its first-half profit, buoyed by record gold and copper production at its Cadia operations.

Read more

Better commodity prices boost South32 profit

South32 has posted an 18 per cent rise in half-year underlying profit as a surge in metallurgical coal output and stronger commodity prices helped boost its bottom-line.

Read more

Tend your STEMs for a future in mining

Almost all jobs in mining in future will require skills in science, technology, engineering and maths, said Rio Tinto’s Iron Ore Boss Chris Salisbury.

Read more


industry insight

Light at the end of the tunnel for drillers

The skills shortage in the drilling industry has been caused by a rise in drill rig utilisation

Products and Technology

New grinders improve efficiency

There has been an influx of new grinding equipment and technology to hit the market in recent times and it can sometimes be difficult for mining producers to keep up with

People and Projects

New pact signals deeper trade ties

Despite Indonesia being Australia’s closest northern neighbour, the trade and investment relationship between the two counties is relatively undeveloped and presents

Occupational Health and Safety

Evolving into a modern, professional industry

The drilling sector is a far cry from what it used to be.


Planning for the whole life of mine

Mining has been a big part of Australia’s history and economic development since the mid-1800s, with the regulatory landscape only beginning to catch up relatively recently, especially when it...

Read more