Our Company

DDH1 Limited (ASX: DDH) is Australia’s premier ASX-listed mineral drilling contractor, serving the Australian mining and exploration industry – from the smallest explorer to the largest miners across all phases of mineral exploration and resource development.

DDH1 operate a fleet of +170 highly productive drill rigs and employ over 1600 drilling industry specialists.

“We don’t take short cuts on safety or quality, and we only employ the most experienced people in the industry.”

Based in Perth, with a regional office in Brisbane, what started as a one-rig fleet in 2006 today comprises three complementary brands – DDH1 Drilling, Strike Drilling, Ranger Drilling & Swick Mining Services.

DDH1 Limited operates a divisional business structure where all four of our brands have professional managers to ensure that each specialised brand is well managed and sustainable.

DDH1 Drilling

DDH1 Drilling specialises in diamond core drilling services for the extraction of rock samples from depths of up to 3,000 metres. DDH1 Drilling are pioneers of deep hole directional drilling and, due to the highly technical nature of the drilling performed, require highly experienced personnel, and specialised equipment to perform the services.

Directional drilling allows for controlled deviations in the direction of drilling activity – making it possible for drilling to be steered toward a designated target or to steer drilling back on course if it deviates from a planned path.

Strike Drilling

Strike Drilling are specialist air core (AC) and reverse circulation (RC) drillers, operating highly mobile, dual purpose rigs for work with a focus on enhanced safety, reduced environmental impact and productivity.

Strike’s dual-purpose rigs have a smaller footprint than traditional RC rigs and utilise longer drill rods and other features such as stationary cone sampling systems. This allows for increased productivity, better sample quality when aircore drilling and easier access to smaller and more inaccessible sites than a traditional RC rig.

Ranger Drilling

Ranger Drilling primarily focuses on reverse circulation and core drilling drilling for the iron ore industry. Ranger’s drilling services have various applications across the entire mine life cycle.

Ranger is at the forefront of automation, monitoring, recording and transmitting drilling data in real time, which allows operations managers to remotely observe the operating parameters of drilling rigs and to direct drillers in the most efficient operational methods.

In just 14 years, DDH1 Limited has grown to the most sought-after ASX-listed drilling contractor in Australia. It is a testament to our unwavering commitment to safety, quality, efficiency and the use of the most advanced machinery and techniques to deliver outstanding outcomes to our clients.

Swick Mining

Swick Mining Services (Swick) has built its reputation over 20 years of operational excellence, setting industry benchmarks for productivity, reliability and versatility. With innovative and reliable rigs, Swick’s globally recognised underground drilling solutions increase productivity, reduce cost and deliver project objectives.

Our Story

From humble beginnings to Australia’s premier ASX-listed drilling services company.


Ranger Drilling is established by Matt Izett


DDH1 Drilling is established by Murray Pollock and Matt Thurston


DDH1 Drilling establishes an east coast office in Brisbane


Strike Drilling is established by Richard Bennett


DDH1 acquires Sandvik’s Australian inventory as factory closes

Jun 2017

Oaktree acquires 50% interest in DDH1

Feb 2018

DDH1 drills the deepest mineral core hole in Australian history at Northern Star Resources Jundee gold mine

Jun 2018

DDH1 acquires Strike Drilling

Jan 2019

DDH1 completed the deepest mine service hole in the southern hemisphere

Apr 2019

DDH1 acquires Ranger Drilling

Mar 2021

ASX Listing

March 2022

DDH1 acquires Swick Mining

Board and Management

A diverse cross-sector of expertise and knowledge built on strong, enduring client and industry relationships.

Board Members

Diane Smith-Gander AO

Chair and Independent Non-Executive Director

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Alan Broome AM

Non-Executive Director

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Sy Van Dyk

Managing Director and Chief Executive Officer

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Andrea Sutton

Independent Non-Executive Director

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Murray Pollock

Non-Executive Director

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Byron Beath

Non-Executive Director

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Management Team

Sy Van Dyk

Managing Director and Chief Executive Officer

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Ben Mackinnon

Chief Financial Officer

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Peter Crennan

General Manager of DDH1 Drilling West Coast Operations

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Russell Chard

General Manager of DDH1 Drilling East Coast Operations

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Richard Bennett

Managing Director Strike Drilling

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Matt Izett

Managing Director Ranger Drilling

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Kent Swick

Managing Director Swick

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Our Businesses

Australia’s premier drilling services contractor

DDH1 Limited drills the deepest, most complex holes in the Australian mining and exploration industries and provides clients with the highest quality samples in the shortest possible time. We aim to service the entire mining and exploration industry – from the junior explorers right through to tier 1 miners – and place a strong emphasis on safety and environmental responsibility.

Specialists in diamond core drilling – primarily for near mine exploration, mine development and production drilling.

Visit DDH1 Drilling

Specialists in air core and reverse circulation drilling – primarily for early-stage exploration drilling.

Visit Strike Drilling

Specialists in reverse circulation drilling – primarily for the Western Australian iron ore industry.

Visit Ranger Drilling

Specialists in underground diamond coring for the hard rock mining industry.

Visit Swick Mining

Corporate Governance

We are committed to maintaining the highest standards of corporate governance. Our corporate governance framework has been established to ensure that directors, officers and employees fulfill their functions responsibly, whilst protecting and enhancing the interests of shareholders.

We believe that good corporate governance adds to the performance of the Company, creates shareholder value and engenders the confidence of the investment market.

Key Corporate documents