The mobile drilling unit Kulluk is towed by the tugs Aiviq and Nanuq in 29 mph winds and 20-foot seas 116 miles southwest of Kodiak City, Alaska, Sunday, Dec. 30, 2012.
The mobile drilling unit Kulluk is towed by the tugs Aiviq and Nanuq in 29 mph winds and 20-foot seas 116 miles southwest of Kodiak City, Alaska, Sunday, Dec. 30, 2012. AP
The mobile drilling unit Kulluk is towed by the tugs Aiviq and Nanuq in 29 mph winds and 20-foot seas 116 miles southwest of Kodiak City, Alaska, Sunday, Dec. 30, 2012. AP

Shell's Arctic oil exploration operation faces multiple investigations

January 09, 2013 6:36 AM