Higher grades boost Fort Knox

Kinross Gold Corp. May 2 reported that its Fort Knox Mine near Fairbanks, Alaska, produced 93,038 ounces of gold during the first quarter, a nearly 6 percent increase over the 87,800 oz recovered there during the first three months of 2016. The company attributes the 5,238-oz increase to higher grade ore being fed through the mill.

The mill at Fort Knox processed 2.93 million metric tons of ore av...