About: http://webisa.webdatacommons.org/128891065

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	Being considerably less dense than sand or other quarry products, ash was a bedding material much-admired by the laying gangs, as it is easy to cart and to spread, and compacted well.
http://www.w3.org/ns/prov#wasQuotedFrom	pavingexpert.com