Japanese firm Mitsui & Co is planning to invest 9.6bn yen ($124m) in the Kestrel mine extension in Queensland, Australia, due to a recent increase in development costs.

Mitsui holds a 20% stake in Kestrel Joint Venture, which owns the project, and the remaining 80% stake is held by Rio Tinto.

Discover B2B Marketing That Performs

Combine business intelligence and editorial excellence to reach engaged professionals across 36 leading media platforms.

Find out more

The Kestrel mine extension will require a total of 48bn yen ($621m) in additional capital expenditure.

Currently, the Kestrel mine produces about 4Mtpa of metallurgical and thermal coal.

The extension is expected to increase the operation period of Kestrel by 20 years, with estimated coal production of 6.5Mtpa.

The total capital expenditure of the project, including the additional capital expenditure, will be about 157.6bn yen ($2bn), while Mitsui’s total capital expenditure will be 31.5bn yen ($407m).

GlobalData Strategic Intelligence

US Tariffs are shifting - will you react or anticipate?

Don’t let policy changes catch you off guard. Stay proactive with real-time data and expert analysis.

By GlobalData

 

Mining Technology Excellence Awards - Nominations Closed

Nominations are now closed for the Mining Technology Excellence Awards. A big thanks to all the organisations that entered – your response has been outstanding, showcasing exceptional innovation, leadership, and impact

Excellence in Action
Awarded the 2025 Mining Technology Excellence Innovation Award for Equipment Diagnostics, Razor Labs’ DataMind AI™ platform turns sensor data and imagery into actionable maintenance insights, avoiding hundreds of thousands of dollars in downtime. Find out how leading mines are using DataMind AI™ to keep critical assets running.

Discover the Impact