Eager to discover whether Rio Tinto Ltd. subsidiary Kennecott Exploration Inc. will exercise its right to buy back a 60 percent stake in the Whistler gold-copper project, Kiska Metals Corp. has launched a 15-hole drill campaign and corresponding 3-D-induced polarization survey to explore the larger potential of the 173-square-mile, or 448-square-kilometer, central Alaska property.

The largest p...