About: http://webisa.webdatacommons.org/215506811

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	united by some cementing material, such as iron oxide or calcium carbonate.
http://www.w3.org/ns/prov#wasQuotedFrom	coalimpoundment.org