- Eachbuildinghadfireproofdrywallstoprotectthestairwells.Druguserswerejackingupinthestairwells.Forexample,stairwellsoftenplayedacentralroleinHitchcockdramas.Insidethestairwellsandhallwaysfeatureexposedconcreteoffsetbycolourfulpaintworkandlighting.Theke...
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