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{{#evu:https://www.youtube.com/watch?v=DYjtUFfvt4k |alignment=center |description=In 1960, ACO was hesitant to supply the world-famous Kaiser Wilhelm Memorial Church. It seemed too big a risk because the honeycombs contained steel wire. This could have rusted and caused parts of the façade to crumble. ACO did not want to be responsible for this damage. The contract therefore went to a competitor.
