Mining copper  a set of 36 photographs illustrating the mining and treatment of sulphide copper ores on the Copperbelt of Zambia.  [picture] : 

 - [Lusaka?] :  RST. 
 - RST publication .
<br/><br/> Accompanied by annotated index [13p.] and a map of the copper mines of the world. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Copper mines and mining -- Zambia.--Copper mines and mining -- Zambia.