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5 résultats pour : coltan

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Coltan, also Columbite, Oka, Quebec Coltan is a dull black metallic ore from which are extracted
BRK25G51_303

Coltan, also Columbite, Oka, Quebec Coltan is a du...

Miners in tantalite columbite mine, open pit, Muhanga Coltan Mines, Muhanga Mines, Rwanda, Africa
BRK25D60_207

Miners in tantalite columbite mine, open pit, Muha...

Miners in tantalite columbite mine, open pit, Muhanga Coltan Mines, Muhanga Mines, Rwanda, Africa
BRK25D36_309

Miners in tantalite columbite mine, open pit, Muha...

Coltan metal ore, open pit coltan mining, Muhanga coltan mines, Rwanda, Africa
BRK25D39_267

Coltan metal ore, open pit coltan mining, Muhanga ...

Miners in tantalite columbite mine, open pit, Muhanga Coltan Mines, Muhanga Mines, Rwanda, Africa
BRK25D34_092

Miners in tantalite columbite mine, open pit, Muha...