Nkwekọrịta ọla kọpa Ụwa

Nkwe ịhụnanya ọla kọpa nke ụwa,nyere aka na March 28, 1935, bụ ọbụbụ nke ụlọ ọrụ ndị na-egwuputa ihe na- na-enwe ike cartel ọla kọpa zuru ụwa ọnụ.  Nkwe ahụ ahụ mebere nke ọma International Copper Cartel .  N'ịkọwa ndị na- Medical Africa, South America na ndị Europe, ahụ bụ iji "weta ọnọdụ dị mma na mmetụta, nkesa na akara ngosi ọla kọpa n'ụwa nile na mfe United States" site na mbelata .  Iji na-ahụ maka mmeju nke ma ሰራተኛ ya, kaadị ahụ nyere maka njikwa njikwa nke ndị òtù 5.

Ndị bịanyere aka na nkwekọrịta ahụ

• T Union Minière du Haut Katanga ( Katanga, Belgian Congo )
• Ụlọ ọrụ Rhokana ( Zambia )
• Roan Antelope ọla kọpa (Zambia)
• Ụlọ ọrụ nyocha nke Chile ( Chile )
• Ngwuputa ọla kọpa Andes (Chile)
• Greene Cananea ọla kọpa ( Mexico )
• Ụlọ ọrụ Braden Copper (Chile)

Na mgbakwunye na nke dị n'elu, Compagnie Francaise de Mines de Bor na Rio Tinto onye ọ na-enwe ikike inwe otu onye nzaghachi na-aga (na-Manu votu) nkọwa niile nke ndị ọrụ, na-ahụ nke ike ikike inwe otu onye nzaghachi na-aga (na-Manu votu) nkọwa niile nke ndị ọrụ, na onyeisi nke ike ndị dị otú ahụ  ahụ na akara nke ajụjụ niile.  .

Njikọ mpụga

 

• Ederede nke nkwekọrịta ọla kọpa ụwa
• Montero, J.-P. na Guzmán, JI mmekorita na-akwalite ọdịmma ọdịmma n'ihu n'ọnụ ọnụ asọmpi.
• Guzmán, JI Imekọ ihe ọnụ dị ka a price stabilizing usoro na ịnweta ahịa