Newmont Mining of Colorado has completed its AU$14 Billion purchase of Canada's Goldcorp to become the world's leading gold business, combining company named to become Newmont Goldcorp.

The merged company said it wasn't lookingto be the biggest, but rather the best - offering investors the highest annual dividend and largest reserves and resources per share among senior gold producers.

"We've met our goal to become the world’s leading gold business, and we'll maintain that position by executing our winning strategy," said Gary Goldberg, who was just appointed Newmont Goldcorp's chief executive from the same role at Newmont.  "That strategy focuses on constantly improving safety and efficiency at our current operations while we continue to invest in expansions and exploration to fuel next generation production," he added, "An equally important part of that strategy is to meet stakeholders' expectations by continuing to lead the sector in value creation and sustainability performance."

The company expects to steady gold production to reach six to seven million ounces over the coming decades, and increase

Newmont operated the Boddington gold-copper mine in Western Austraia, as well as the Kalgoorlie Super Pit in a joint venture with Barrick Gold.  Newmont was also an operator at the Tanami gold project in the Northern Territory, which could undergo a second expansion to reach a mine life beyond 2028.