Member states of the Intergovernmental Council of Copper Exporting Countries (CIPEC).
  Four founding members (Chile, Peru, Republic of Zaire, Zambia.)
  Four additional members added in 1975 (Australia, Indonesia, Papua New Guinea, Yougoslavia.)
Own work. Derived from  File:Map of CIPEC.png by Nádvorník, released under PD-self. Map derived from  File:BlankMap-World6.svg by Canuckguy (en.wp), released under PD-self.  Coloured using Inkscape.
Cflm001 (talk)