Rezultate pentru »but prices have historically been as high as $45 per kg. A Congolese Coltan miner can earn up to $200 per month. However according to a recent report by Amnesty International children as young as seven are working in Congolese mines«

Subiect		Evaluare	Răspunsuri	Accesări	Ultimul răspuns
	{{%%!^10}}+256789125443 Columbite Tantalite coltan Ta2o5 : 35.1% 2) Nb2O5 : 34.9% 3) Fe2o3 : 15.5% 4) MnO : 9.63% 5) TiO2 in China India, Indonesia Bangladesh Srilanka Myanmar Malaysia Singapore DUBAI Japan, Canada primarily used to create capacitor De la abubare (07.06.2022, 01:38) găsit în: Pescuit la știucă, șalău și bibani		0	562	Nici un răspuns

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