About: http://webisa.webdatacommons.org/85616766

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	The average specific gravity of the coarse and fine sulfate is approximately 2.5, indicating that fluorogypsum is slightly lighter in weight than naturally occurring aggregates, such as crushed limestone or sand and gravel.(1)
http://www.w3.org/ns/prov#wasQuotedFrom	dot.gov