Meanwhile BHP (NYSE:BHP), one of the largest exporters of iron ore and coking coal from Australia, said it is optimistic going into 2018.

“Based on our view that the steel market in China will remain tight, thus supporting mill margins, we expect (iron) ores at the higher end of the grade spectrum to perform well for at least the remainder of the calendar year,” chief commercial officer Arnoud Balhuizen said on BHP’s website.

Turning to coal,  Macquarie said coking coal prices will also remain elevated for longer than it previously anticipated.

The bank revised its near-term coking coal price forecasts by 32% and 40% in the first and second quarters of next year, respectively, to $185 and $175 a tonne. It said the upgrades were based on Chinese restocking demand and tight coking coal supply.

“With the potential for voluntary supply restraint by major Chinese metallurgical coal producers, ongoing supply issues, Chinese port inventories remaining low, high land-borne logistics costs in China, and the potential for an accelerated rate of capacity closures in calendar year 2018, it is possible that metallurgical coal prices can sustain above long-run marginal costs for some time,” BHP’s Balhuizen was quoted in The Australian.