A quest by Teck Cominco Alaska Inc. to expand operations at the Red Dog Mine in northwestern Alaska is moving forward as regulators prepare to conduct a series of public scoping meetings Oct. 2-5 in affected communities.

Red Dog, the world's largest producer of zinc concentrate, began production in 1989. It is located 82 miles north of Kotzebue on land owned by NANA Regional Corp., the Alaska N...