Conveyors in Mining - International Mining
2012-10-1 · Some 40 years ago, the strongest conveyor belt was an St 4000, used in an underground coal mine in Europe (St 4000, the rating as per DIN 22131, stands for a minimum breaking strength of 4,000 N/mm of belt width). A Phoenocord St 5400 was supplied for the German hard coal mining group RAG, 15 years later.
