Occurrence of Attributes in Original Text

The text related to the cultural heritage 'Asante Traditional Buildings' has mentioned 'Iron' in the following places:
Occurrence Sentence Text Source
In 12 out of the 13 buildings the original steeply pitched palm-frond thatched roof has been replaced by lighter, shallower-pitched, corrugated iron roofs, and in all the buildings there has been the insertion of more durable paved flooring than the traditional rammed earth.