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Mountain of Tin Draws Investors to World's Biggest Untapped Site

Alphamin braves armed groups and remote location in Democratic Republic of Congo.
Vegetation grows on the hills outside Goma
Photographer: Tom Wilson

As a chartered helicopter lifts off from the edge of Lake Kivu in Democratic Republic of Congo, villages and farmland quickly turn to verdant hills that stretch out as far as the eye can see. An hour of flying over dense jungle ends at a small tented camp perched on a hillside. “Welcome home,” reads a hand-painted sign.

It’s one of the few indications of the $119 million tin mine that Alphamin Resources Corp. plans to build at this site, called Bisie, on what the company says is the largest untapped deposit in the world.