Coal stocks collectively advanced. At the time of writing, MONGOL MINING (00975) rose 8.29% to HK$8.36; KINETIC DEV (01277) gained 4.62% to HK$1.81; YANCOAL AUS (03668) increased 3.84% to HK$37.32; CHINA SHENHUA (01088) was up 1.28% to HK$44.16.

The gains follow a gas explosion accident at the Liushenyu Coal Mine operated by Tongzhou Group in Qinyuan County, Changzhi City, Shanxi Province on May 22. As of May 23, the incident has resulted in 90 fatalities. According to statistics from Mysteel, the number of suspended coking coal mines in Shanxi has now risen to 109, with a combined capacity of 122 million tons, impacting raw coal output by 319,500 tons. Shanxi is a core domestic production hub for coking coal, and the suspensions represent a significant contraction in supply.

Hua Tai Securities analysis suggests that preliminary investigations into the accident have revealed issues such as "concealed working faces" and "unclear headcounts of underground workers." The firm believes this is likely to trigger an upgrade in safety production supervision, impacting coal output. Coupled with the already tight supply-demand balance for coal this year, this is expected to accelerate the upward trend in coal prices. The analysis reiterates a primary recommendation for YANKUANG ENERGY's A and H shares among coal sector stocks. For coking coal-specific stocks, BEIJING CAPITAL RESOURCES, SHANXI COKING COAL GROUP, and LU'AN ENVIRONMENTAL ENERGY are also positioned to benefit from the structural reduction in coking coal supply.