Before a closure can be deemed permanent, the following key elements must be destroyed:
- in the case of hot rolling mills: reheating furnaces, rolling mill stands and cooling beds,
- in the case of cold rolling mills: mill stands,
- in the case of coating plant: coiling machines, accumulators, and tanks or cells used to apply the coating,
- in the case of other plant: components whose destruction makes it impossible to operate the plant: e.g. the tilting mechanism of LD converters; the steel jacket, superstructures and, where appropriate, the square tower of a blast furnace; the pushing machine in a coking plant.
