Ore difficulties hamper Red Dog

Teck Resources Ltd. April 25 reported the Red Dog Mine in Northwest Alaska produced 102,500 metric tons of zinc during the first quarter, a six percent drop compared to the same period last year. The company attributed this drop to challenges of processing the higher grade but more complex ore from Qanaiyaq, the new pit at Red Dog.

During the first quarter, ore from Qanaiyaq pit was introduced to...