Glencore PLC said it plans to restructure its Hail Creek coal mine in Queensland, Australia, which will result in more than 400 job losses, Reuters reported Oct. 15.

The plan will decrease the workforce from the current 1360 to 930 and will also involve changing the mining methods at Hail Creek. Most of the changes will be implemented by the second quarter of 2019.

In March, the company agreed to acquire an 82% stake in Hail Creek from Rio Tinto. Glencore took over operations at the mine Aug. 1 and plans to introduce a roster system under which employees would work for seven days and be off for seven days.

Hail Creek produced about 9.4 million tonnes of coking and thermal coal in 2017.