Office of the Pu’er municipal government today has announced that four workers have been rescued 47 hours after a railway tunnel collapsed at a construction site.

The railway collapse happened on Monday in Pu’er City, southwest China’s Yunnan Province.

The construction project of Wanggang Mountain Tunnel located in Mojiang County is being undertaken by China Railway 16th Bureau Group Co. Ltd.

According to the office of the Pu’er municipal government, more than 300 personnel from emergency management, public security, and firefighting departments, among others, were involved in the rescue.

All four rescued workers have been sent to the hospital and are currently in a stable condition.