Occurrence of Attributes in Original Text

The text related to the cultural heritage 'Monumental Earthworks of Poverty Point' has mentioned 'Clay' in the following places:
Occurrence Sentence Text Source
For this reason, clay may have been used to cap the loess constructions to protect the surfaces from erosion.
However, clay figurines are evenly distributed throughout the ridge system.
& a large number clay made by the indians for edible purposes indicating the fact that the inhabitants who located the town were a tribe of clay eating indians.
The clay balls (Poverty Point Objects) were the size of a green walnut & had been baked in fire.
Michael Hargrave and Berle Clay conducted a large area geophysical survey from 2006 to 2012, using magnetic gradiometry and resistivity to investigate the plaza and ridge system.