刚果（金）发生矿难，致200多人死亡

Group 1 - The article reports a significant mining disaster in the Rubaya coltan mine in North Kivu Province, Democratic Republic of the Congo, resulting in over 200 fatalities due to tunnel collapses [1] - The M23 movement, which has controlled the Rubaya area since April 2024, confirmed that the incident occurred between January 28 and 29, with many artisanal miners, including women and children, being trapped [1] - Coltan, primarily used to extract the rare metal tantalum, is crucial for high-tech applications such as smartphones, electric vehicles, fighter jets, and medical implants, with Rubaya alone accounting for over 15% of global tantalum supply according to UN estimates [1]