Occurrence of Attributes in Original Text

The text related to the cultural heritage 'Chaco Culture' has mentioned 'Wood' in the following places:
Occurrence Sentence Text Source
Experts estimate that it took 29,135xc2xa0man-hours to erect Chetro Ketl alone; Hewett estimated that it took the wood of 5,000 trees and 50 million stone blocks.
The Chacoan structures altogether required the wood of 200,000 coniferous trees, mostly hauledxe2x80x94on footxe2x80x94from mountain ranges up to 70 miles (110xc2xa0km) away.