Poland’s JSW adjusts annual production plan due to another mine fire

The company declared force majeure after an incident at the Borynia-Zofiówka mine

Jastrzębska Spółka Węglowa (JSW), Europe’s largest coking coal producer, has announced an adjustment to its annual production plan following a fire at the Borynia-Zofiówka mine. According to a stock exchange announcement, the incident will result in the loss of 156,000 tons of coking coal in 2025.

The fire occurred on September 12, 2025, in the Zofiówka section, where endogenous combustion forced the temporary isolation of the hazardous area. The C-2 longwall in seam 505/1 was isolated. This forced the company to suspend operations and revise its annual targets.

On September 18, the JSW management board decided to declare force majeure. The company’s partners were officially notified of the consequences of the accident for the fulfillment of contractual obligations.

“As of the date of this report, it is impossible to determine the full impact of the incident on the future prospects of the company and the JSW group,” the stock exchange statement said.

The company also added that it would inform the market with separate announcements if new significant data became available.

JSW is the largest producer of coking coal in Europe and a key supplier to the metallurgical industry in Poland and EU countries. Frequent incidents at the company’s mines in recent years pose additional risks to production stability and the fulfillment of long-term contracts.

In August, JSW received an official decision to extend its license to extract coal and methane from the Borynia deposit until the end of 2042. The decision ensures the stability of the mine’s operations and the development of the region for 17 years. Its reserves are estimated at nearly 40 million tons of high-quality coking coal, as well as over 80 million cubic meters of methane.