About: http://webisa.webdatacommons.org/114205948

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	None of these are very radioactive (apparently you can sit on a barrel of yellowcake for a week without going over your annual uSv limit) but rock is a pretty good insulator and the Earth has a lot of rock.
http://www.w3.org/ns/prov#wasQuotedFrom	joannenova.com.au