A major copper mine in the B.C. Interior could be poised to have new owners.

Hudbay Minerals Inc. says it has struck a deal to buy Copper Mountain Mining Corp., the majority owner of the Copper Mountain mine near Princeton in an all-stock deal it valued at US$439 million.

The companies say the combination will create an Americas-focused copper mining company with an operating portfolio of three long-life mines, as well as a pipeline of copper expansion and development projects.

Under the agreement, Copper Mountain shareholders will receive 0.381 of a Hudbay share for each Copper Mountain common share held.

The companies say the proposal represents a 23 per cent premium based on Hudbay91ÂãÁÄÊÓƵ™s and Copper Mountain91ÂãÁÄÊÓƵ™s 10-day volume-weighted-average share prices on April 12.

The deal, which requires approval by a two-thirds majority vote by Copper Mountain shareholders and a simple majority vote by Hudbay shareholders, is also subject to closing conditions including regulatory and court approvals.

Once the transaction is complete, Hudbay shareholders will own about 76 per cent of the combined company, while Copper Mountain shareholders will hold 24 per cent.

According to its corporate website, the Copper Mountain Mine produces approximately 100 million pounds of copper equivalent on average per year.

Hudbay owns mining operations in Peru and Manitoba and copper development projects in Arizona and Nevada.

READ MORE: