Tyre protection chain inventor Erlau celebrates 70 years since patent
German company Erlau celebrates 70 years since the first chain link designed for tyre protection. A small drawing registered by Erlau in 1943 marks a pivotal moment in the history of bulk materials handling. At that time mining methods were changing as the lumbering steam shovels, rope-operated excavators and horse-drawn rail tubs, which had themselves superseded the pick and shovel, were...