Katanga Copper, 1950's - Film 9091
1:01:35
Geology of the Central African Copperbelt - David Wood
11:05
Les forçats du cobalt : plongée dans l'enfer des mines en République démocratique du Congo
23:01
"Big Rock Crusher Machine: A Giant in Action"Big Rock Crushing: A Powerful Process"#stonecrusher
14:11
Inside Africa's Food Forest Mega-Project
56:49
A Boy Manufacturing Large Pistons in a High-Tech Factory Using Precision Techniques and Technology
16:56
Nicaragua's $50BN Panama Canal Rival
12:18
Diggers and Merchants: A Congolese copper digger | Africa Direct
24:08