SHANXI — Hu Haijun, director and Communist Party chief of the Shanxi Bureau of the National Mine Safety Administration, is under investigation for serious violations of discipline and law. The Central Commission for Discipline Inspection announced the probe on July 14, 2026, marking the highest-level official implicated in an expanding corruption investigation tied to Shanxi’s coal mining sector following a deadly May gas explosion that killed 82 workers.

The Central Commission for Discipline Inspection posted a notice on its website Monday evening confirming Hu’s investigation but did not specify the nature of the alleged violations. Hu, who has led the Shanxi Bureau since January 2022, held dual authority as both its director and Party chief, overseeing regulatory enforcement across one of China’s most critical energy-producing regions.

The investigation follows a catastrophic gas explosion on May 24, 2026, at the Liushenyu coal mine facility in Qinyuan county, Changzhi, Shanxi province. The blast killed 82 workers, making it China’s deadliest mining accident in years. The mine was operated by the Shanxi Tongzhou Coal & Coke Group and had been officially designated as disaster-prone by the National Mine Safety Administration in 2024, raising questions about oversight and enforcement.

In response to the explosion, local authorities announced a blanket inspection of coal mines across the province. The probe has since broadened to include regulatory failures and potential collusion between officials and operators. Two researchers from the eighth division of the Shanxi Bureau—which is responsible for conducting national-level safety inspections of coal mines in the Changzhi area, including the Liushenyu facility—are also under investigation.

Hu, 55, holds a master’s degree in engineering and was entrusted with enforcing mine safety standards in a province that produced 1.3 billion tons of coal in 2025—nearly one-third of China’s total output. Shanxi employs approximately 800,000 mine workers, making safety oversight a matter of national economic and public concern.

The investigation into Hu Haijun underscores the intersection of regulatory accountability and industrial safety in China’s coal sector, where past accidents have exposed systemic lapses in enforcement. The Liushenyu mine’s prior classification as disaster-prone intensifies scrutiny of whether officials ignored or downplayed known risks. With Shanxi supplying almost a third of the nation’s coal, failures in oversight carry implications for both worker safety and energy security.

The probe is part of a broader effort to address corruption and negligence following one of China’s worst mining disasters in recent years. As the highest-ranking official implicated, Hu’s case could set a precedent for how regulatory authorities are held accountable when flagged hazards result in mass casualties.