Boldyn Networks, in collaboration with Nokia, has deployed a private 5G network at the Callio FutureMINE site in Pyhäjärvi, Finland. The project transforms one of Europe’s deepest mines into a next-generation testbed for mining innovation.
The site, which operated as a copper mine for more than 60 years, now provides a real-world environment for technology companies to trial and validate mining equipment.
Underground mines present some of the most extreme challenges for communications. Their depth, complex tunnel structures, and harsh conditions make reliable connectivity difficult to achieve. The Boldyn solution, powered by Nokia’s Modular Private Wireless (MPW), is designed to deliver stable, high-performance coverage across multiple underground levels and a tunnel system stretching several kilometres to depths of up to 1.5 kilometres. The network offers ultra-low latency and high bandwidth, enabling the deployment of advanced mining applications that improve safety, automation, and operational efficiency.
The private 5G system forms the foundation of Callio’s ambition to operate as a fully automated test mine. It enables the remote control of machinery and vehicles from the surface, reducing the need for personnel in hazardous environments while maximising productivity and minimising downtime.
Several advanced technologies are already being tested at the facility. Automation and tele-remote systems allow autonomous vehicles and equipment to be operated from above ground, supporting safer and more efficient mining. A next-generation voice communication system replaces outdated walkie-talkies with reliable mobile connectivity across all levels of the mine, enhancing coordination and response times.
In addition, Finnish software firm Cybercube is testing digital twin and real-time positioning technology, which integrates 3D mapping with operational control. This provides continuous visibility of personnel, vehicles, and assets in environments where GPS is unavailable. Such tools improve situational awareness, evacuation planning, and overall safety management.
The deployment demonstrates how secure, industrial-grade 5G networks can meet the unique demands of mining. By enabling automation, real-time control, and continuous communications, the Callio project showcases how next-generation connectivity can transform underground operations, making them safer, more sustainable, and more efficient.
