China has begun testing a 500-ton shaft boring machine, nicknamed “Gangtie Jiliang,” designed to access mineral resources located over 1,000 meters (3,280 feet) underground. The machine, described as an “underground aircraft carrier” by state media, is intended to unlock previously inaccessible mineral deposits. This initiative signals a push for greater resource independence and the development of deep-earth exploration technology. Details regarding the specific minerals targeted have not been released. The project represents a significant investment in advanced drilling capabilities. Successful deployment of this technology could reshape China’s access to critical raw materials. The operation is currently in its testing phase, with the machine actively drilling a kilometer-deep borehole.