Underground copper mining poses various challenges, as seen in the case of Chuquicamata Subterranea. These challenges include construction difficulties, collapses, and delays in production. Additionally, maintenance and operational issues, such as lack of spare parts and frequent machinery breakdowns, can hinder the mining process. Adapting to the unique geology of underground copper mines is also crucial for successful operations. These challenges highlight the complexities involved in undertaking large-scale mining projects.