Australian mining contractor Macmahon Holdings has confirmed a one-year extension of its tenure at Black Cat Syndicate’s Majestic underground gold mine in Western Australia.
ASX-listed Macmahon last year won a A$55 million deal to start development of Majestic, near Kalgoorlie, and ramp up production. Majestic is part of Black Cat’s Kal East operations which feed ore to its Lakewood mill. The company considers there is potential to extend the current short mine-life at Majestic through new drilling.
Black Cat said last month early work had started on a $20 million internally-funded expansion of Lakewood from 1.2 million tonnes per annum to 1.5Mtpa. Kal East produced 16,842 ounces of gold in the March quarter this year, mostly from third-party ore, with Black Cat transitioning to material from its 100%-owned mines this year.
Majestic and nearby Fingals would “drive growth in gold production at Kal East over the coming years”, it said.
Macmahon has five WA gold-mine contracts among the 11 group-wide underground contracts listed in its current job portfolio. Underground hard-rock mining contributed 25% of the $1.3 billion revenue it reported for the six months to December 31, 2025.
The company was pursuing new work in an $8.1 billion “underground pipeline” of which $3.5 billion was up for grabs in the next 12 months.



