thyssenkrupp says it has handed over the world’s largest rail-mounted stacker to its client BHP for the South Flank iron ore development in Western Australia,

The first stacker among a “trio of giants”, ST-04 took more than three years of research and design development in six countries, and two years of significant local fabrication, construction and commissioning processes, thyssenkrupp said.

Over the next few months, it will gradually ramp up its operating capacity of 20,000 t/h.

The engineering company was awarded this contract − one of its largest ever fabrication and construction projects in Western Australia − by BHP back in late 2018.

Under the €150 million ($181 million) contract, thyssenkrupp was to supply two stackers that deposit iron ore into stockyards for loading, and a reclaimer for loading the ore onto trains for transport to Port Hedland. The machines’ capacity of 20,000 t/h made them the largest rail-mounted stackers and reclaimers in the world, according to the company.

Primero has been helping thyssenkrupp in this pursuit, carrying out pre-assembly of the machines at its Australian Marine Complex, in Henderson, Western Australia.

In BHP’s half year results to December 31 released earlier this week, it said South Flank remained on budget and on track to deliver first production by mid-2021. The company expects the operation to ramp up to 80 Mt/y of output, helping replace production from the existing Yandi mine, which is reaching the end of its economic life.