About Ironbark

Started with one lease and a second-hand fleet.

Twenty-one years on, we’re still headquartered in Mackay and still run by people who came up through the pit.

A small site office beside a dirt yard with a flagged light vehicle, early morning at the mine
Our story

Built in the Bowen Basin, not bolted onto it.

Ironbark was formed in 2004 by three mining engineers who had spent their careers on Central Queensland coal and thought a smaller operator could run a pit better. The first lease was a marginal open cut nobody else wanted. It’s still producing.

We grew by buying assets others had written off and running them properly — tight scheduling, a maintained fleet, and crews who stay. Around 84% of our workforce lives in the Mackay, Isaac and Central Highlands regions, and we spend the bulk of our procurement budget inside Queensland.

We’re privately held. There’s no quarterly market story to manage, which means we can make decisions on a mine-life horizon and hold to them.

Milestones
2004
Company formed in Mackay. First open-cut lease acquired near Moranbah.
2011
Warrigal Creek begins production. On-site CHPP commissioned two years later.
2018
Mundoo Range longwall commissioned — our first underground operation.
2021
Cardowan South tenement acquired. Resource drilling completed in 2024.
2025
9.4 Mtpa combined ROM. Triple ISO recertification across all sites.

Leadership

Portrait of Graham Toohey, Chief Executive Officer

Graham Toohey

Chief Executive Officer

Mining engineer, 28 years in Queensland coal. Co-founded Ironbark in 2004.

Portrait of Deb Wallace, Chief Operating Officer

Deb Wallace

Chief Operating Officer

Former SSE at two Bowen Basin underground operations. Joined 2016.

Portrait of Arjun Mehta, Commercial Director

Arjun Mehta

Commercial Director

Leads offtake, logistics and joint ventures from our Brisbane office.

Portrait of Karen Lindqvist, General Manager Safety and Sustainability

Karen Lindqvist

GM Safety & Sustainability

Accountable for the group safety and health management system and reporting.

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