突发塌陷，官方通报

Group 1 - The core issue involves a ground subsidence incident at the Longtun lead-zinc mine in Daxin County, Guangxi, which occurred on September 3, resulting in a sinkhole approximately 10 meters in diameter and 7 meters deep, without any casualties reported [1] - Following the incident, the local government promptly organized emergency management and ordered the involved company, Guangxi Hengmaiyuan Mining Co., Ltd., to suspend all operations [1][2] - An expert investigation indicated that the subsidence was primarily due to the area's unique geological conditions, including unstable top layers and recent heavy rainfall, which contributed to the collapse [1] Group 2 - The local authorities have implemented measures to prevent similar incidents, including the establishment of geological monitoring points in the affected area for dynamic monitoring and early warning [1] - The Daxin County government is committed to ensuring that the involved company strictly adheres to rectification requirements to safeguard the safety of local residents and their property [2] - Villagers have reported that the subsidence has adversely affected agricultural production, drinking water, and living conditions in the area [4]