Reliable tire for underground mining equipment In the tough underground conditions, reliability is the key feature in a tire. The rugged new Nokian Mine King E-4 gives a lifetime of service for your heavy mining equipment – with no surprises. Ready for a long, trouble-free service Strong carcass with a maximum operating pressure of 10 bars Sharp shoulders and large contact area for better grip Deep grooves with a solid middle section enable good puncture resistance and a long service life