Sentence:  The space-saving arrangement of the stores and the controlled cooling down of coils in the <WSD>flat store</WSD> which led to reduced handling times and inventory volume had a very positive effect on the efficiency of the cold rolling mill and product availability for shipment. 
Meaning of the word marked with <WSD> tags:  A storage facility in which the material stored is simply piled on a floor (as opposed to a bin or silo).