A deadly mining accident in China's biggest coal-producing region and mounting ​policy chaos around Indonesian exports are choking global supplies, which analysts and industry officials say could boost prices as liquefied natural ‌gas (LNG) supplies remain tight due to the US-Israeli war on Iran.The war in Iran halted shipping in the Strait of Hormuz, through which, during normal times, a fifth of global oil and LNG supplies passes, triggering purchases of high-grade coal by Japan and South Korea and pushing the Newcastle benchmark to near two-year highs of over US$150 a metric ton.

However, purchases of lower-grade coal, ​typically from top exporter Indonesia, have been soft due to tepid demand from China and India, which have leaned upon sufficient inventories and ​renewable output to meet power demand.

That is changing after a fatal explosion at a Shanxi mine last month, analysts say, with ⁠the accident triggering sweeping safety inspections in the province and tightening domestic supplies.

China's June thermal coal imports are expected to rise 27.6 percent from a year earlier ​to 27.8 million metric tons to meet higher seasonal demand as local supply tightens, DBX Commodities CEO Alexandre Claude said, a substantial increase relative to tepid demand until ​May.