Published：May 31, 16:00Last updated：Jun 5, 02:00

Deadly Explosion and Toxic Gas Leak Incidents Rock South Korean Industrial Facilities

May. 31, 2026 16:00

A fire broke out at SK Hynix's fourth campus in Cheongju, South Korea, on June 1, originating in a gas chamber connecting two production areas. The automatic sprinkler system quickly controlled the fire, but fluoride gas leaked, sending 7 people to the hospital. Approximately 3,600 employees were evacuated, and the factory resumed operations after gas clearance. SK Hynix stated that production equipment was unaffected and the cause is under investigation.

Summarized

52News

12Media

Jun. 4, 2026 05:11

Labor authorities raided Hanwha Aerospace following a deadly factory explosion that killed five people. The investigation focuses on safety measures during cleaning work involving propellant powder. The company has faced previous fatal incidents at the same facility. Authorities vowed to hold those responsible accountable for any violations.

Jun. 5, 2026 02:00

South Korea's defense procurement chief, Lee Yong-cheol, visited the site of a recent explosion at a Hanwha Aerospace factory in Daejeon. The explosion on Monday killed five people and injured two. Lee inspected recovery efforts and discussed prevention measures. He also paid respects at a memorial altar for the victims and vowed to prevent similar accidents.

Two major industrial incidents occurred in South Korea on June 1, 2026, resulting in multiple casualties and raising serious safety concerns. A catastrophic explosion at Hanwha Aerospace's factory in Daejeon killed five workers and injured two during propellant cleaning operations, while a fire at SK Hynix's Cheongju campus caused six hospitalizations due to hydrofluoric acid exposure. Both incidents prompted immediate government and corporate responses, with Defense Minister Ahn Gyu-back and Labor Minister Kim Young-hoon overseeing investigations. The Hanwha explosion has particularly tarnished the company's reputation as a defense leader and raised election-year safety debates. Hankyoreh+3

🔥 Incident Timeline

The Hanwha Aerospace explosion occurred at 10:59 AM during cleaning of rocket propellant residue - a process previously considered low-risk - completely destroying a 544-square-meter building. This marks the third fatal explosion at the facility since 2018. Police identified all five victims through DNA analysis, including both contract and permanent employees. Meanwhile, SK Hynix's gas chamber fire was contained by sprinklers but leaked hydrogen fluoride gas, forcing evacuation of 3,600 people. Defense Acquisition Program Administration (DAPA) has joined the Hanwha probe, focusing on ignition sources and flammable materials. China.org+3

🚨 Government Response

President Lee Jae-myung ordered full investigations into both incidents, with prosecutors and police forming special teams. The Defense Production Act was invoked for Hanwha's case, while environmental agencies monitored SK Hynix's gas leak. Hanwha partially suspended production of critical defense systems like Chunmoo rocket launchers and L-SAM missiles pending safety reviews. The company apologized and pledged victim support, but the incident may impact South Korea's weapon exports. Huanqiu+3

⚙️ Industrial Impact

Hanwha Aerospace, producing 40% of South Korea's tactical weapons, faces operational disruptions at its key Daejeon propulsion facility. SK Hynix resumed production after gas clearance, though its stock rose amid global chip demand. Both companies pledged safety overhauls, with analysts warning potential delays in military contracts and supply chain effects. The incidents have intensified scrutiny on industrial safety ahead of local elections. Yonhap News Agency+3

DaejeonSK HynixKim Min-seokLee Jae-myungHanwha Aerospace