About: http://webisa.webdatacommons.org/401897630

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	There is a chapter devoted to Deep Levels - their development and prospects, and other articles deal with Mining practice on the Rand, Surface Equipment, The Metallurgical treatment of the ore, etc.
http://www.w3.org/ns/prov#wasQuotedFrom	nationalbookauctions.com