The steel plant's warren of tunnels and bunkers was designed to ... the steel and mining conglomerate that owns Azovstal. But steelworkers started sheltering underground in 2014, when Russian ...

The last fighters defending the city's Azovstal steel plant have now surrendered ... they lived for weeks in underground bunkers and tunnels without seeing daylight. The sprawling four-square ...

The Azovstal Iron and Steel Works - a massive, four sq-mile (10 sq km) plant in the south-east of ... It is a maze of tunnels and workshops and provides a natural advantage to defenders.