Coeur Mining Inc. is now officially the owner of Silvertip, a high-grade silver mine about 10 miles south of the Yukon border in northern British Columbia.

In a deal that closed on Oct. 17, the Chicago-based miner paid US$200 million to acquire Silvertip and has agreed to pay up to another US$50 million more if certain permitting and resource expansion milestones are met.

For this investment, C...